Consulta: creatorFacets:"Steinshamn, Håvard"
Registros recuperados: 69
Data/hora: 11/06/2024 05:46:07

Effect of replacing organic grass-clover silage from primary growth with regrowth on feed intake and milk yield of dairy cows
Provedor de dados: 21
Autores: Naadland, Sondre Stokke; Steinshamn, Håvard; Randby, Åshild T.
Under Norwegian conditions, diets based on primary growth (PG) silage typically increase milk yield compared to silage prepared from the regrowth (RG). Organic PG, dominated by immature grasses, is often high in energy and low in crude protein (CP), whereas the opposite is the case for organic RG harvests, dominated by clover. Here, we tested the hypotheses that increasing proportions of RG will reduce the total supply of metabolizable energy, but increase the CP intake, and that there is a dietary optimal mix of PG and RG to meet requirements for optimal milk production. Sixteen Norwegian Red cows were used in an experiment designed with four balanced 4 × 4 Latin squares with 21-day periods to evaluate the effect of incremental replacement of PG with RG...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Feeding and growth.
Ano: 2017
URL: http://orgprints.org/30594/1/Naadland%20et%20al%202016%20Replacing%20organic%20grass%20clover%20silage%20from%20PG%20with%20RG.pdf

Lamb finishing on chicory containing swards relative to grass-clover mixtures
Provedor de dados: 21
Autores: Kidane, Alemayehu; Steinshamn, Håvard; Eik, Lars Olav; Sørheim, Kristin.
The preliminary results from our work indicate  that chicory could be used for improved lamb  production either as a sole stand or in mixtures with  grass/clover.
Tipo: Conference paper, poster, etc.
Palavras-chave: Animal husbandry; Feeding and growth.
Ano: 2015
URL: http://orgprints.org/31310/1/Poster%20for%20Bioforsk%20conference%20on%20Lamb%20experiment.pdf

Engdriftsmåter og melkekvalitet
Provedor de dados: 21
Autores: Adler, Steffen A.; Steinshamn, Håvard.
Sammenhengen mellom engdriftssystemer og melkekvalitet i økologisk landbruk skal undersøkes i et nytt prosjekt. Valget mellom kortvarig og langvarig eng er avgjørende for den botaniske sammensetningen i drøvtyggerfôret og en kan forvente at melkas kvalitetsegenskaper påvirkes. Tolv økologiske melkebruk ble paret med 12 konvensjonelle i Midt-Norge og inngår i en toårig feltstudie som startet i januar 2007. Seks gårder i hver gruppe er valgt ut blant gårder med kortvarig eng og 6 blant gårder med langvarig eng. Annenhver måned skal det samles inn melkeprøver fra gårdstanken og fôrprøver på alle gårdene. Melkeprøvene vil bli analysert for fettsyresammensetning, oksidativ stabilitet, vitaminer, fytoøstrogener, sensorisk kvalitet og innhold av mikromineraler. I...
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Feeding and growth.
Ano: 2007
URL: http://orgprints.org/10569/1/Bioforsk_Fokus_2_1_48%2D49.pdf

Lite nitrogentap fra mjølkegarder som baserer seg på egen fôrprodukjson
Provedor de dados: 21
Autores: Steinshamn, Håvard; Bleken, Marina Azzaroli; Hansen, Sissel.
Tap av nitrogen (N) er et stort problem i landbruket, og i Europeiske direktiver blir det krevd forandring i landbrukspraksis for å redusere avrenningen. Ekstensiv mjølkeproduksjonen basert på heimeprodusert fôr er den mest effektive måten å bedre N-effektiviteten på. N-effektiviteten på gardsnivå reduseres dersom innkjøpet av fôr er høgt i forhold til planteproduksjonspotensialet på garden.
Tipo: Journal paper
Palavras-chave: Nutrient turnover; Dairy cattle; Farming Systems.
Ano: 2004
URL: http://orgprints.org/4028/1/4028.pdf

Hydrogenering av fettsyrer i vomma - effekt av botanisk sammenstening av surfôret
Provedor de dados: 21
Autores: Adler, Steffen; Steinshamn, Håvard; Thuen, Erling; Jensen, Søren K.; Hansen-Møller, Jens.
Surfôr fra kortvarig eng (KS) hadde lavere innhold av  C18:3c9,12,15 enn surfôr fra langvarig eng(LS)og raigrassurfôr. Likevel ga surfôr fra KS høyest innhold av C18:3c9,12,15 i melk. Årsaken var redusert hydrogenering i vomma. Dette gjaldt også summen av alle umettede C18-fettsyrer men ikke C18:1c9 eller C18:2c9,12. Årsaken til redusert hydrogenering for KS kan være rødkløverens innhold av PPO.
Tipo: Conference paper, poster, etc.
Palavras-chave: Pasture and forage crops Food security; Food quality and human health Animal husbandry Feeding and growth.
Ano: 2011
URL: http://orgprints.org/18817/4/18817.pdf

White or red clover-grass silage in organic dairy milk production:Grassland productivity and milk production responses with different levels of concentrate
Provedor de dados: 21
Autores: Steinshamn, Håvard; Thuen, Erling.
Red (RC) or white (WC) clover were grown in mixture with grasses, ensiled and offered to dairy cows in early lactation over two successive years (48 cows per year) to compare grassland yield, feed intake, milk production and milk quality. The crops were ensiled in round bales and proportional mixtures of the second and third cut prepared each year were used to ensure that the silage treatments were representative of the crop. In addition to silage type, concentrate supplementation, without and with (10 kg/day), was included as a factor in a 2×2 factorial, continuous experiment. Total dry matter (DM) yield, silage chemical composition and totalDMintake was hardly affected by silage type. There was no effect of silage type on milk yield and milk constituents...
Tipo: Journal paper
Palavras-chave: Food security; Food quality and human health Dairy cattle Feeding and growth.
Ano: 2008
URL: http://orgprints.org/13811/1/SteinshamnLIVSCI687.pdf

Effects of feeding dairy cows different legume-grass silages on milk phytoestrogen concentration
Provedor de dados: 21
Autores: Höjer, Annika; Adler, Steffen; Purup, Stig; Hansen-Møller, Jens; Martinsson, Kjell; Steinshamn, Håvard; Gustavsson, Anne-Maj.
Phytoestrogens are hormone-like substances in plants that can substantially influence human health (positively or negatively), and when fed to dairy cows are partly transferred to their milk. The aim of this study was to investigate effects of varying the botanical composition and regrowth interval of legume-grass silage on phytoestrogen intake and milk phytoestrogen concentrations. In one experiment, 15 Swedish Red dairy cows were fed two- or three-cut red clover-grass silage, or two-cut birdsfoot trefoil-grass silage. In a second experiment, 16 Norwegian Red dairy cows were fed short-term ley silage with red clover or long-term ley silage with white clover, and the effects of supplementation with α-tocopherol were also tested. There were high...
Tipo: Journal paper
Palavras-chave: Dairy cattle; "Organics" in general; Pasture and forage crops.
Ano: 2012

Sulphur supply: a limiting factor in organic roughage-based livestock production?
Provedor de dados: 21
Autores: Bakken, Anne Kjersti; Hansen, Sissel; Strøm, Turid; Steinshamn, Håvard.
Abstract - The herbage sulphur (S) content on 28 organic farms was monitored in order to evaluate the S supply for plants and ruminants in organic livestock production. The S content and the protein content were generally low. S fertilisation improved the yield and protein content of red clover only when the initial S supply was very low. Increasing S application rates did not increase the S content of red clover above a certain level that depended on other soil and environmental factors. Instead of an increase in the shoots with increasing S supply, there was an accumulation of S in the roots.
Tipo: Conference paper, poster, etc.
Palavras-chave: Pasture and forage crops; Farm nutrient management; Feeding and growth.
Ano: 2006
URL: http://orgprints.org/7369/1/hansen_et_al_organic_congres_may_2006.doc

Økonomi i saueholdet ved tilgang på ekstra innmarksbeite
Provedor de dados: 21
Autores: Ebbesvik, Martha; Bergslid, Ildri (Rose) Kristine; Grøva, Lise; Lande, Unni Støbet; Steinshamn, Håvard.
Prosjektet «BeiteRessurs» har vært ledet av Norsk Institutt for Bioøkonomi (NIBIO). Norsk senter for økologisk landbruk (NORSØK) og Senter for bygdeforskning har vært samarbeidsparter. Prosjektet ble gjennomført 2013-2016. Hovedmålet var å teste mulighetene for å ta i bruk marginale jordbruksområder som har ligget brakk, til beite for sau. Denne rapporten tar for seg de økonomiske konsekvensene av å ta i bruk et nedlagt innmarksbeite til vår- og høstbeite på sauegarder i Midt-Norge.
Tipo: Web product
Palavras-chave: Production systems; Farm economics; Feeding and growth; Sheep and goats.
Ano: 2018
URL: http://orgprints.org/34759/1/index.html

Effect of organic grass-clover silage on fiber digestion in dairy cows
Provedor de dados: 21
Autores: Naadland, Sondre Stokke; Steinshamn, Håvard; Krizsan, Sophie Julie; Randby, Åshild T.
There are differences in grass-clover proportions and chemical composition between herbage from primary growth (PG) and regrowth (RG) in grass-clover leys. Mixing silages made from PG and RG may provide a more optimal diet to dairy cows than when fed separately. We tested the hypotheses that increasing dietary proportions of grass-clover silage made from RG compared with PG would increase digestion rate of potentially degradable NDF (pdNDF), and increase ruminal accumulation of indigestible NDF (iNDF). Eight rumen cannulated Norwegian Red cows were used in two replicated 4×4 Latin squares with 21-day periods. Silages were prepared from PG and RG of an organically cultivated ley, where PG and RG silages were fed ad libitum in treatments with RG replacing PG...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Feeding and growth.
Ano: 2017
URL: http://orgprints.org/32828/1/Naadland%20et%20al.%20-%202016%20-%20Effect%20of%20organic%20grass-clover%20silage%20on%20fiber%20digestion%20in%20dairy%20cows.pdf

Feed nitrogen conversion in lactating dairy cows on pasture as affected by concentrate supplementation
Provedor de dados: 21
Autores: Steinshamn, Håvard; Höglind, Mats; Garmo, Torstein H; Thuen, Erling; Brenøe, Ulrik Tutein.
The effect of concentrate supplementation on nitrogen (N) intake and excretion in grazing lactating dairy cows was determined in three herds in Norway. Grazing trials were conducted with each herd in June and August for two consecutive years. The average supplementation was 1.8 (S.D. 2.1) kg DM/day, and the concentrate was based on grain with a N content ranging from 18.7 to 24 g/kg DM. Herbage DM and N intake were reduced with increasing supplementation, but total DM and N intake increased. Milk yield and protein content increased by 1.1 kg milk and 0.28 g protein per kg milk for each kg extra concentrate. Milk N excretion increased with increasing supplementation (6.5 g N/kg DM), and N utilisation improved by 11.7 g N per kg N intake per kg extra...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Air and water emissions; Feeding and growth.
Ano: 2006
URL: http://orgprints.org/10651/1/Steinshamn_etal_2006_Feed_N_conversion.pdf

Effekt av kløverart og høstetid på innhold og sammensetning av fettsyrer
Provedor de dados: 21
Autores: Adler, Steffen A.; Steinshamn, Håvard; Bleken, Marina A.; Langeland, Åsmund; Thuen, Erling.
Effekten av kløverart og høstetid på innhold og sammensetning av fettsyrer i avlingen fra økologisk kløvereng ble undersøkt. Kløverart påvirket ikke innholdet av fettsyrer men økende innhold av rødkløver økte andelen av alfalinolensyre. Tidlig 1. slått førte til høyere innhold av fettsyrer og større andel av alfalinolensyre enn normal høstetid.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Pasture and forage crops.
Ano: 2006
URL: http://orgprints.org/10573/1/FA_Adler_2006_PM%C3%98.pdf

Effekt av botanisk sammensetning i surfôr på omsetning av fettløselige vitaminer i vom og overføring til melk
Provedor de dados: 21
Autores: Adler, Steffen; Jensen, Søren K.; Thuen, Erling; Gustavsson, Anne-Maj; Harstad, Odd Magne; Steinshamn, Håvard.
Det var en tilsynelatende netto økning av α-tokoferol i vomma mens omtrent halvparten av β-karoten ble brutt ned. Surfôr fra Kortvarig økologisk eng som inneholdt rødkløver ga melk med lavere innhold av fettløselige vitaminer enn de andre surfôrslagene
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle Pasture and forage crops Farming Systems Food security; Food quality and human health.
Ano: 2013
URL: http://orgprints.org/23138/1/Adler%20et%20al%202013%20Vitamin%20i%20melk%20og%20botanisk%20samansetning%20i%20surf%C3%B4r%20HFM2013.pdf

Omsetjing av planteøstrogen hos mjølkeku - effekt av botanisk samansetjing av surfôret
Provedor de dados: 21
Autores: Steinshamn, Håvard; Adler, Steffen; Njåstad, Kari Marie; Thuen, Erling; Hansen-Møller, Jens.
Planteøstrogena formononetin og daidzein blir i stor grad omsatt til equol og vidare til ukjende sambindingar i vomma. Nedbrytinga av planteøstrogena i vom var sterkare i surfôr laga på raigras og langvarig artsrik eng enn i surfôr laga av timoteieng eller kortvarig eng med raudkløver. Attfinninga av planteøstrogena var størst i gjødsel og minst i mjølk. Omsetjinga av equol i kroppen (intermediær) var avgrensa av fart (rate limiting) medan dette synest ikkje å vere tilfelle i vom og tarm.
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health Feeding and growth.
Ano: 2011
URL: http://orgprints.org/18818/1/Steinshamn_et_al_planteestrogen.pdf

In vitro anthelmintic effects of bark extracts from Picea abies and Pinus sylvestris against sheep nematodes
Provedor de dados: 21
Autores: Blomstrand, Berit Marie; Ptochos, Sokratis; Enemark, Heidi; Thamsborg, Stig Milan; Aasen, Inga Marie; Steinshamn, Håvard; Athanasiadou, Spiridoula.
Gastrointestinal nematodes (GIN) in sheep are a common cause of reduced animal welfare and performance, and thus, high economical losses. The emerging drug resistance in GIN prompts for new methods in combating infections. Several studies have indicated an anti-parasitic effect of tannin-rich plants when included in the diet.  The objective of this study was to assess the potential in vitro anthelmintic efficacy of tannin-rich extracts from bark of common Norwegian trees (spruce and pine) against GIN of sheep.
Tipo: Conference paper, poster, etc.
Palavras-chave: Sheep and goats; Health and welfare.
Ano: 2018
URL: http://orgprints.org/35025/1/Poster%20COMBAR%20Sept%202018.pdf

Equol and enterolactone – two mammalian phytoestrogens with estrogenic potency found in organically produced milk
Provedor de dados: 21
Autores: Adler, Steffen A.; Steinshamn, Håvard.
Cows fed red clover yield milk with high concentrations of the isoflavandiol equol, a phytoestrogen with high estrogen potency. Soy products have much higher content of isoflavones than milk, but not all humans are able to produce equol from isoflavones. Many plant lignans can be metabolised to enterolactone, and milk concentrations tend to be higher during grazing season than indoor feeding season. Therefore, milk produced on feed containing red clover and milk produced on pasture may be considered a functional food. However, more documentations on possible effects in humans, including unwanted side effects are needed.
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Feeding and growth.
Ano: 2017
URL: http://orgprints.org/31380/1/Adler%20NJF%20RT%20SA.docx

Flåttbåren sykdom hos sau
Provedor de dados: 21
Autores: Grøva, Lise; Olesen, Ingrid; Stuen, Snorre; Steinshamn, Håvard.
Prosjektet "Improved welfare in sheep production – preventive measures, disease resistance and robustness related to tick-borne fever in sheep" er et 4-årig prosjekt som skal se på forebyggende tiltak mot flåttbåren sykdom og produksjonstap i norsk sauehold.
Tipo: Conference paper, poster, etc.
Palavras-chave: Animal husbandry; Breeding and genetics.
Ano: 2007
URL: http://orgprints.org/10767/1/poster_Bioforsk_Husdyfm%C3%B8te2007_SWATICK_endelig_12022007.ppt

Økonomi i saueholdet ved tilgang på ekstra innmarksbeite
Provedor de dados: 21
Autores: Ebbesvik, Martha; Bergslid, Ildri (Rose) Kristine; Grøva, Lise; Lande, Unni Støbet; Steinshamn, Håvard.
Prosjektet «BeiteRessurs» har vært ledet av Norsk Institutt for Bioøkonomi (NIBIO). Norsk senter for økologisk landbruk (NORSØK) og Senter for bygdeforskning har vært samarbeidsparter. Prosjektet ble gjennomført 2013-2016. Hovedmålet var å teste mulighetene for å ta i bruk marginale jordbruksområder som har ligget brakk, til beite for sau. Denne rapporten tar for seg de økonomiske konsekvensene av å ta i bruk et nedlagt innmarksbeite til vår- og høstbeite på sauegarder i Midt-Norge.    De fleste undersøkelsene i prosjektet ble gjort på et nedlagt fellesbeite på 220 daa i Møre og Romsdal. Dette arealet ble dyrket opp rundt 1980, og var i bruk som fellesbeite for melkekyr frem til sommeren 2001. I 2013 ble det ryddet en gjerdetrasé og arealet ble gjerdet inn...
Tipo: Report
Palavras-chave: Farm economics; Sheep and goats.
Ano: 2017
URL: http://orgprints.org/31375/1/N%C3%98RS%C3%98K%20Rapport%2014%202017%20%C3%98konomi%20i%20saueholdet%20ved%20tilgang%20p%C3%A5%20ekstra%20innmarksbeite.pdf

Forage botanical and chemical composition on dairy farms with different grassland systems and production systems
Provedor de dados: 21
Autores: Adler, Steffen; Steinshamn, Håvard.
Thirty-two dairy farms in Middle-Norway with different grassland systems (short-term (&lt;4 years) grassland (S) or long-term (&gt;7 years) grassland (L)) and different production systems (organic (O) or conventional (C)) were compared in a field study in 2007. In a principal component analysis on variables including farm details, botanical composition and chemical forage composition, the farms were separated into organic and conventional farms with the exception of one farm. Amongst the organic farms most SO farms were distinguished from LO farms. Concentration of forage crude protein was positively correlated with proportion of grass. Concentration of non-fibrous carbohydrates, in vitro digestibility and net energy lactation was positively correlated...
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle; Pasture and forage crops.
Ano: 2010
URL: http://orgprints.org/17497/1/149_Adler_AH.pdf

Effect of pasture botanical composition on milk composition in organic production
Provedor de dados: 21
Autores: Adler, Steffen; Dahl, A.V.; Vae, A.H.; Thuen, E.; Garmo, T.; Krogh-Jensen, S.; Hansen-Møller, J.; Steinshamn, Håvard.
Milk samples from sixteen Norwegian Red dairy cows grazing mixed swards of either grass-red clover (GR) or mixed swards of sown and unsown species of grass, clover and other herbs (GCH) were collected during four periods. Both pastures were organically managed. Pasture botanical composition had no effect on milk fat, protein or vitamin concentration and only minor effects on fatty acid composition. Milk from GR had higher concentrations of the phytoestrogens equol, genistein and biochanin A than the milk from GCH. Concentrations of equol in milk from GR were higher than concentrations reported from experiments with red clover silage. The oxidative stability of the milk lipids was not affected by pasture type.
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle; Pasture and forage crops; Feeding and growth.
Ano: 2010
URL: http://orgprints.org/17493/1/147_Adler_AH.pdf

Cows’ diet and milk composition
Provedor de dados: 21
Autores: Harstad, Odd Magne; Steinshamn, Håvard.
The effect of cows' diets on milk composition is discussed, focusing on those components of particular interest for human health. First dietary sources of fatty acids and their digestion and metabolism are reviewed. Then feeding factors affecting milk fat content and fatty acid composition are discussed, with emphasis on those factors related to forage and fat supplements. The effects of diet on protein content and composition and milk content of minerals and vitamins are reviewed. Feeding strategies for improving the nutritional quality of milk are summarized.
Tipo: Book chapter
Palavras-chave: Dairy cattle Food security; Food quality and human health.
Ano: 2010
URL: http://orgprints.org/17116/1/grif1%2Dch9.pdf

Clover species in grass-clover silages affects milk fatty acid composition
Provedor de dados: 21
Autores: Steinshamn, Håvard; Thuen, Erling; Brenøe, Ulrik Tutein.
The objective of this study was to examine the effect of clover species on milk fatty acid  (FA) composition. Lactating dairy cows were allocated to two groups and fed grass-clover silage containing either white clover (WC) or red clover (RC), without or with concentrate supplementation. No significant interaction of clover species with concentrate supplementation could be observed. RC milk had significantly higher proportion of polyunsaturated FAs (P&lt;0.001), particularly C18:3n-3 (P&lt;0.001), and contained a higher n-3/n-6 FA ratio (P&lt;0.05) than WC milk. It is concluded that RC silage, independent of concentrate supply, yielded milk with more beneficial FA composition than WC silage.
Tipo: Journal paper
Palavras-chave: Food security; Food quality and human health Dairy cattle Feeding and growth.
Ano: 2007
URL: http://orgprints.org/10897/1/steinshamn_etal_2007_clover_species_in_grass%2Dclover_silages_affects_milk_fatty_acid_composition.pdf

Performance and meat quality of suckling calves grazing cultivated pasture or free range in mountain.
Provedor de dados: 21
Autores: Steinshamn, Håvard; Höglind, Mats; Havrevoll, Øystein; Saarem, Kristin; Lombnæs, Inger Helene; Steinheim, Geir; Svendsen, Asgeir.
The purpose of this study was to compare the effect of grazing on mountain (M) versus cultivated lowland pasture (C) on the performance and meat quality of suckling calves (Experiment 1 and 2). In addition, the effect of finishing on C after M on growth and meat quality was assessed (Experiment 2). Animals on C and M had on average similar live weight gain and carcass weight in the first experiment. However, the performance depended on year as gain and carcass weight was higher on C than on M in the first year and vice versa in the second year. In the second experiment the calves on M had lower gain and carcass weight than on C. Three week finishing on C after M compensated to some extent for the lower growth rate on M. Overall, the results indicate that...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops Food security; Food quality and human health Beef cattle Feeding and growth Landscape and recreation.
Ano: 2010
URL: http://orgprints.org/17152/1/Steinshamn_et_al_suckler_calf_meat_qaulity_pre_print_of_revised_version.pdf

Feed production on farms without animals is not environmentally sustainable
Provedor de dados: 21
Autores: Steinshamn, Håvard; Bleken, Marina A; Thuen, Erling.
Use of high energy feed supplementation can improve the protein retention by the cattle, and it has been suggested as a way to increase the nitrogen (N) effi-ciency of dairy production. However, in praxis feed supplementation is also used to increase the intensity of animal production above the level that can be supported by the farm's local plant production.  A collection of published surveys showed that dairy farms that buy feed are considerably lees N efficient than farms that supply the entire animal ration from their own plant production. The total N emission to the environment per litre milk doubled when 30% of the total feed ration was produced outside the dairy farm. This was so for organic as well as conventional farms. Similar results can be...
Tipo: Conference paper, poster, etc.
Palavras-chave: Farming Systems; Dairy cattle; Farm nutrient management; Production systems.
Ano: 2006
URL: http://orgprints.org/7500/1/steinshamn_bleken_thuen_N_util.doc

Reetablering av nedlagt innmarksbeite kan redusere kraftfôrkostnadene med 65 %
Provedor de dados: 21
Autores: Ebbesvik, Martha; Bergslid, Ildri (Rose) Kristine; Grøva, Lise; Lande, Unni Støbet; Steinshamn, Håvard.
Å ta i bruk nedlagte innmarksbeiter til vårbeite for søyer og høstbeite for livsauene kan gi betydelige kutt i kraftfôrkostnadene og en betydelig økning i dekningsbidraget. Dette viser et forskningsprosjekt gjennomført av NORSØK og NIBIO.
Tipo: Newspaper or magazine article
Palavras-chave: Farm economics; Feeding and growth; Sheep and goats.
Ano: 2018
URL: http://orgprints.org/32881/1/Sau%20og%20Geit%20nr%202%202018.pdf

Påverkar tida i beitesesongen avdråtten og mjølkekvaliteten hos geit på utmarksbeite?
Provedor de dados: 21
Autores: Steinshamn, Håvard; Inglingstad, Ragnhild Aabøe; Nymo, Magnhild.
Utmarksbeite har sannsynlegvis ikkje skulda for dårleg geitemjølkekvalitet i beitesesongen. Kvaliteten var vel så god på utmark som på innmark, og innhaldet av FFS var lågt både tidleg og seint i beitesesongen på begge beitetypane. Ysteeigenskapar var derimot betre i tidleg beitesesong.
Tipo: Conference paper, poster, etc.
Palavras-chave: Pasture and forage crops Food security; Food quality and human health Feeding and growth Sheep and goats.
Ano: 2011
URL: http://orgprints.org/18821/1/Steinshamn_et_al_Gibostad_HFM2011.pdf

Immunological effects of feeding macroalgae and various vitamin E supplements in Norwegian white sheep-ewes and their offspring
Provedor de dados: 21
Autores: Novoa-Garrido, Margarita; Aanesen, Lise; Lind, Vibeke; Larsen, Hans Jørgen S.; Jensen, Søren K.; Govasmark, Espen; Steinshamn, Håvard.
It is assumed that ewes raised in areas with long indoor winter feeding periods need to be supplemented with vitamins or other substances that help to maintain the health status of the animals. Various supplements are available on the market, but the most widely used supplemental antioxidant and vitamin E source is synthetic all-rac-α-tocopheryl acteate. The objective of the present study was to compare potential vitamin E and immune stimulant sources with synthetic vitamin E regarding bioactivity associated with immunological parameters in order to identify alternatives to synthetic vitamin E for small ruminants. Sources tested were meal of the seaweed Ascophylum nodosum and natural RRR-α- tocopheryl acetate. Forty pregnant ewes were randomly allocated to...
Tipo: Journal paper
Palavras-chave: Feeding and growth; Sheep and goats; Health and welfare.
Ano: 2014
URL: http://orgprints.org/26259/7/26259.pdf

Effect of replacing organic grass-clover silage from primary growth with regrowth on N digestion in dairy cows
Provedor de dados: 21
Autores: Naadland, Sondre Stokke; Steinshamn, Håvard; Krizsan, Sophie Julie; Randby, Åshild T.
Clover proportions, and thereby chemical composition of herbage, differ between primary growth (PG) and regrowth (RG) in organic managed grass-clover fields. The characteristics of PG and RG silages suggest different supplementary feeding strategies to sustain an efficient milk production in dairy cows. Silage made of the RG generally offers more crude protein (CP) in the diet than silage made of the PG because of an increasing proportion of clover later in the season. Additionally, grass and clover have different amino acid (AA) profiles. His has been suggested to be the first limiting AA in grass silage, while Met has been suggested to be the primarily limiting AA in red clover silage. Eight rumen cannulated Norwegian Red cows were used in two replicated...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Animal husbandry; Feeding and growth.
Ano: 2016
URL: http://orgprints.org/30593/1/Naadland%20et%20al%202016%20Replacing%20organic%20grass%20clover%20silage%20from%20PG%20with%20RG%20N%20metabolism.pdf

Flåttbåren sykdom og velferd hos sau
Provedor de dados: 21
Autores: Grøva, Lise; Olesen, Ingrid; Stuen, Snorre; Steinshamn, Håvard.
De største utfordringene for velferden på sau i beiteperioden er sjodogg, fluelarver, alveld og rovdyr (Norges Forskningsråd 2005, Norsk sau og geitavlslag 2001). Økte transportavstander og transporttid samt negativ økonomisk utvikling i saueholdet og en dreining mot mer ekstensive driftsformer gir også grunn til bekymring for velferden til sauen i norsk sauehold.    I økologisk landbruk er et høyt nivå på dyrevelferd og god dyrehelse eksplisitte mål (Debio 2003). Muligheten til å utøve naturlig atferd er et viktig prinsipp, og beitedrift er derfor et viktig aspekt i økologisk landbruk. Utfordringene i både økologisk og konvensjonelt landbruk er ofte sammenfallende, men i økologisk landbruk legger en spesielt stor vekt på årsaksorientert problemløsing og...
Tipo: Conference paper, poster, etc.
Palavras-chave: Sheep and goats; Animal husbandry; Health and welfare; Breeding and genetics.
Ano: 2007
URL: http://orgprints.org/13011/1/Husdyrfors%C3%B8ksm%C3%B8tet_2007_Lise_Gr%C3%B8va_et_al_Fl%C3%A5tt_og_sau.pdf

Hvordan påvirker driftssystemet kvalitet på melk og kjøtt?
Provedor de dados: 21
Autores: Adler, Steffen; Steinshamn, Håvard.
Effekten av ulike driftssystemer på kvalitetsegenskaper av kjøtt og melk ble belyst i fire forsøk. I en casestudie hos 34 melkeprodusenter i Midt-Norge i 2007 og 2008 ble driftssystemene økologisk drift med kortvarig eng (ØK), økologisk drift med langvarig eng (ØL), konvensjonell drift med kortvarig eng (KK) og konvensjonell drift med langvarig eng (KL) undersøkt. I et beiteforsøk sommeren 2008 ble økologisk rødkløvergrasbeite (RB) sammenlignet med økologisk beite med en botanisk allsidig sammensetning (AB). I et forsøk med diekalver i 2006 og 2007 i Gausdal, Lillehammer og Øyer, gikk diekalvene enten på innmarksbeite (IB) eller på utmarksbeite (UB) og effekten på kjøttkvalitet ble undersøkt. I et forsøk i 2008 ble effekten av IB på Ås eller UB i...
Tipo: Conference paper, poster, etc.
Palavras-chave: Pasture and forage crops Food security; Food quality and human health Dairy cattle Beef cattle.
Ano: 2009
URL: http://orgprints.org/16855/1/Adler_og_Steinshamn_2009_Bioforsk_FOKUS_4(6)_30%2D31.pdf

Effekt av surfôr fra kortvarig eng eller langvarig eng på kvalitet i kumelk
Provedor de dados: 21
Autores: Adler, Steffen; Steinshamn, Håvard; Dahl, Annette Veberg; Thuen, Erling; Jensen, Søren K.; Hansen-Møller, Jens.
Surfôr fra kortvarig eng har gitt høyere andel av flerumettede fettsyrer i melk sammenlignet med surfôr fra langvarig eng men dette har ikke ført til at melka ble mer utsatt for lysindusert oksidasjon. Tilskudd av α-tokoferol økte innholdet av α-tokoferol i melka men hadde ingen effekt på melkas oksidative stabilitet. Surfôr fra kortvarig eng ga høyere innhold av isoflavoner og lavere innhold av lignaner i melk enn surfôr fra langvarig eng.
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health Feeding and growth.
Ano: 2011
URL: http://orgprints.org/18820/1/Adler_Effekt_av_surf%C3%B4r_HFM11.pdf

Økologisk mjølkeproduksjon uten kraftfôr
Provedor de dados: 21
Autores: Adler, Steffen A.; Ebbesvik, Martha; Hansen, Sissel; Granås, Rune; Lindås, Anitra; Steinshamn, Håvard.
Det er økende interesse hos forbrukere for mjølk og mjølkeprodukt som er produsert uten bruk av kraftfôr med bare beite og konservert gras i fôrrasjonen. Rørosmeieriet AS, som foredler økologisk produsert mjølk, er interessert i å etablere egen produksjonslinje for mjølkeprodukt fra kyr produsert uten kraftfôr. For mjølkeprodusenten kan det å kutte ut kraftfôr i fôrrasjonen få store konsekvenser for mjølkeytelse og dermed økonomi. Formålet med dette arbeidet var å vurdere hva en kan forvente seg av mjølkeytelse og mjølkekvalitet ved å kutte ut kraftfôr i rasjonen. Helse og fruktbarhet hos dyra, næringsstofforsyning til gården og totaløkonomien vil sannsynligvis også påvirkes, og det var et mål å beregne hva mjølkeprodusenten må ha i merpris for mjølka for...
Tipo: Report
Palavras-chave: Dairy cattle Pasture and forage crops Farm economics Food security; Food quality and human health Feeding and growth Health and welfare Farm nutrient management.
Ano: 2018
URL: http://orgprints.org/32829/1/NIBIO_RAPPORT_2018_4_41.pdf

Effect of forage legumes on feed intake, milk production and milk quality – a review
Provedor de dados: 21
Autores: Steinshamn, Håvard.
Literature data from experiments with lactating dairy cows offered silage-based diets was reviewed to evaluate the effects of the grassland legume species Trifolium repens (WC, white clover), Trifolium pratense (RC, red clover) and Medicago sativa (M, lucerne) on feed intake, milk production and milk quality. Seven data sets were created to compare grass silage (G) with grassland legumes in general(L), G with RC, G with WC, G with M, RC with WC, RC with M and different silage proportions of RC. Daily dry matter intake and milk yield were on average 1.6 and 1.6 kg, respectively, higher and milk fat content 1.2 g/kg milk lower on L than on G based diets. Similar differences were found when G was compared with RC or WC diets. Cows offered WC yielded 1.1 kg/d...
Tipo: Journal paper
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health Feeding and growth.
Ano: 2010
URL: http://orgprints.org/17488/1/Steinshamn_2010_Forage_legumes_feed_intake_milk_production_and_qaulity_review.pdf

The effect of red clover proportion in timothy silage on nitrogen utilization in lactating dairy cows
Provedor de dados: 21
Autores: Steinshamn, Håvard; Mydland, Liv Torunn; Volden, Harald; Thuen, Erling.
Three multiparous cannulated dairy cows were used to test the effect of including 0, 23 % and 46 % red clover (RC) on dry matter (DM) basis in timothy (T) silage on nitrogen (N) intake, utilization and excretion. The cows were offered a fixed ration; 13 kg silage and 7 kg concentrate DM. The N intake and urine N excretion increased with increasing silage clover proportion. Milk yield was higher in the clover containing silages than in the pure grass silage, probably due to higher organic matter digestibility in RC containing silages. The efficiency in converting feed N into milk N, however, was higher in cows fed the timothy silage than in cows offered grass/clover silages. The efficiency in microbial protein synthesis in the rumen and the proportion of...
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle.
Ano: 2006
URL: http://orgprints.org/9316/1/steinshamn_etal_grado_2006.pdf

Effekten av fôrtilskudd fra sjø og land på bakteriebalansen i tarmen hos søyer og deres avkom
Provedor de dados: 21
Autores: Novoa-Garrido, Margarita; Aanensen, Lise; Larsen, Hans Jørgen S.; Jensen, Søren K.; Steinshamn, Håvard.
E vitamin er nødvendig for drøvtyggere for å opprettholde et velfungerende immunsystem, høyt reproduksjonsnivå, og god melk- og kjøttkvalitet. Innholdet av antioksidanter i råmelken påvirker absorpsjonen av antistoffer hos nyfødte kalver. Selen-innholdet i jord kan være lavt, og dermed kan hjemmedyrket grovfôr være fattig på selen. Hvis grovfôret også er fattig på E-vitamin, som samhandler med selen i sine biologiske effekter, kan underforsyning lett oppstå. Derfor blir rasjonene til drøvtyggere supplert med syntetisk produsert E-vitamin for å sikre tilstrekkelig inntak. Det er imidlertid kjent at syntetisk E-vitamin består av 87,5 % molekyler med ikke-naturlig konfigurasjon og som biologiske ikke er like effektiv (Jensen &amp; Lauridsen, 2007). Av denne...
Tipo: Conference paper, poster, etc.
Palavras-chave: "Organics" in general; Animal husbandry; Feeding and growth.
Ano: 2011
URL: http://orgprints.org/18825/1/Abstraktet.pdf

Prevalence of Anaplasma phagocytophilum infection and effect on lamb growth
Provedor de dados: 21
Autores: Grøva, Lise; Olesen, Ingrid; Steinshamn, Håvard; Stuen , Snorre.
Background: A major challenge in sheep farming during the grazing season along the coast of south-western  Norway is tick-borne fever (TBF) caused by the bacteria Anaplasma phagocytophilum that is transmitted by the tick  Ixodes ricinus.  Methods: A study was carried out in 2007 and 2008 to examine the prevalence of A. phagocytophilum infection  and effect on weaning weight in lambs. The study included 1208 lambs from farms in Sunndal Ram Circle in Møre  and Romsdal County in Mid-Norway, where ticks are frequently observed. All lambs were blood sampled and  serum was analyzed by an indirect fluorescent antibody assay (IFA) to determine an antibody status (positive or  negative) to A. phagocytophilum infection. Weight and weight gain and possible effect of...
Tipo: Journal paper
Palavras-chave: Animal husbandry; Sheep and goats; Health and welfare.
Ano: 2011
URL: http://orgprints.org/19866/1/PAPER_I.pdf

α-Tocopherol in plasma and milk from organically managed dairy cows fed natural or synthetic vitamin E or seaweed
Provedor de dados: 21
Autores: Steinshamn, Håvard; Luteberget, Ingvild Steinnes; Jensen, Søren K.; Thuen, Erling.
The objective was to compare the effects of supplementing lactating dairy cows with synthetic (All-rac), natural (RRR) α-tocopheryl acetate or seaweed with a control on the concentration of α-tocopherol in blood and milk. Twenty four dairy cows in mid lactation, fed an organic feed ration, were randomly allocated to the four treatments in a replicated Latin square design. Plasma and milk α-tocopherol concentrations were higher in RRR and All-rac than in the other treatments and higher in RRR than in All-rac. RRR-α-tocopherol was the predominant steroisomer (&gt; 86%), in both plasma and milk, whereas the remaining part was largely made up by the three synthetic 2R isomers. In cows fed the control, seaweed and RRR, the proportion of RRR-α-tocopherol in...
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle; Feeding and growth; Health and welfare.
Ano: 2012
URL: http://orgprints.org/21667/1/Steinshamn_et_al_2012_alpha-tocopherol_dairy_cows.pdf

Treng kyr i midtlaktasjon ekstra tilskot av E-vitamin?
Provedor de dados: 21
Autores: Steinshamn, Håvard; Luteberget, Ingvild Steinnes; Larsen, Hans Jørgen S.; Jensen, Søren K.; Thuen, Erling.
Sjølv om α-tokoferolinnhaldet (39 mg/kg DM) i surfôr ikkje var spesielt høgt, var det tydelegvis nok når surfôropptaket var så høgt som i dette forsøket. Det er grunn til å revurdere tilrådinga om ekstra E-vitamin til mjølkekyr i midt- og seinlaktasjon.
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health Regulation.
Ano: 2013
URL: http://orgprints.org/23139/1/Sateinshamn%20et%20al%202013%20E-vitamin%20tilskot.pdf

Growth and chemical composition of chicory and performance of lambs grazing chicory relative to grass–clover mixtures
Provedor de dados: 21
Autores: Kidane, Alemayehu; Sørheim, Kristin; Eik, Lars Olav; Steinshamn, Håvard.
We report results from trials on chicory growth (experiment 1) and lamb growth on chicory (experiment 2). In experiment  1, we assessed yield and chemical composition on swards established under organic conditions as perennial ryegrass/red  clover, perennial ryegrass/chicory, chicory/red clover (CHRC), pure perennial ryegrass (RG-alone) and pure chicory (CHalone)  over two years. Chicory/red clover and CH-alone showed improved crude protein, Ca, Mg, P, Cu and net energy  contents compared to other mixtures. However, dry matter yield was the lowest for CHRC and CH-alone compared to  others. In experiment 2, 48 weaned lambs grazed swards sown as chicory alone (CHA), chicory–grass–clover mix (CGC) or  grass–clover mix (GCM) for 45 days. Lamb body weight (BW)...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops; Sheep and goats.
Ano: 2014
URL: http://orgprints.org/29290/1/Kidane%20et%20al%202014%20Chicory%20growth%20and%20lamb%20performance.pdf

Jordbruksarealer ute av drift og ubrukte utmarksbeiter - oppsummering fra arbeidsmøte
Provedor de dados: 21
Autores: Bergslid, Ildri (Rose) Kristine; Steinshamn, Håvard.
I perioden 2003 – 2013 har gras- og beitearealet i  Møre og Romsdal blitt redusert med om lag 10 %. Samtidig er det en politisk målsetting at husdyrproduksjonen så langt som mulig skal skje på grunnlag av norsk grovfôrareal, beitebruk og norske fôrråvarer. Skal vi lykkes med det krever det at vi bruker jord- og beiteressursene våre langt bedre enn i dag.
Tipo: Report
Palavras-chave: Food security; Food quality and human health Landscape and recreation.
Ano: 2017
URL: http://orgprints.org/31096/1/NORS%C3%98K%20INFO%201%20-%20%202017%20Jordbruksarealer%20ute%20av%20drift%20og%20ubrukte%20utmarksbeiter.pdf

Yield and herbage quality from organic grass clover leys—a meta-analysis of Norwegian field trials
Provedor de dados: 21
Autores: Steinshamn, Håvard; Adler, Steffen A.; Frøseth, Randi Berland; Lunnan, Tor; Torp, Torfinn; Bakken, Anne Kjersti.
A meta-analysis based on experiments in organically cultivated grasslands in Norway was conducted to quantify the effects of management factors on herbage yield and feed quality. A dataset was collected that included 496 treatment means from experiments in five studies carried out at eight locations with the latitude range of 58.8 to 69.6 N between 1993 and 2010. We tested the effect of harvesting system (two vs. Three cuts annually), plant developmental stage at the first cut, growth period (temperature sum) and the herbage clover proportion. Plant maturity at the first cut and herbage clover proportion explained to a large extent herbage yield and quality of the first cut and annual yield. The timing of the first cut influenced also the yield and herbage...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops.
Ano: 2016
URL: http://orgprints.org/30595/1/Steinshamn%20et%20al%202016%20Yield%20and%20herbage%20quality%20organic%20grassland%20authors%20copy.pdf

Økologisk mjølk: Er det mulig uten kraftfôr?
Provedor de dados: 21
Autores: Ebbesvik, Martha; Adler, Steffen A.; Hansen, Sissel; Steinshamn, Håvard.
Både kjøtt og mjølk fra dyr som ikke har spist kraftfôr er populært og omsettes i stadig større omfang i Europa og i USA. Mjølk fra kyr som ikke har fått kraftfôr er også mulig i Norge. Skal slik mjølk bli et satsingsområde i Norge avhenger det av at både forbruker og stat er villig til å betale for det.
Tipo: Web product
Palavras-chave: Farm economics; Farming Systems; Animal husbandry; Feeding and growth.
Ano: 2018
URL: http://orgprints.org/33261/2/Melk%20uten%20kraftf%C3%B4r%20-%20kronikk%20fra%20forskningno.pdf

Effect of grassland management in organic and conventional farming systems on bovine milk quality – a field study
Provedor de dados: 21
Autores: Adler, Steffen; Steinshamn, Håvard.
Thirty-two dairy farms in Middle-Norway participated in a field study in 2007 and 2008. Nine organic farms with short-term grassland (SO) were paired with 9 conventional farms with short-term grassland (SC) and 7 organic farms with long-term grassland (LO) were paired with 7 conventional farms with long-term grassland (LC) with regard to proximity and calving pattern. Every second month feed and tanker milk samples were collected from each farm. Data from the Norwegian dairy herd recording system were collected and botanical composition before first cut in 2007 was analysed. Milk samples were analysed for chemical composition, fatty acid composition, vitamin concentration, selenium concentration and phytoestrogen concentration. In this paper results from...
Tipo: Conference paper, poster, etc.
Palavras-chave: Pasture and forage crops Food security; Food quality and human health Dairy cattle Feeding and growth.
Ano: 2009
URL: http://orgprints.org/16858/1/Adler_et_al_2009_Grassland_management_Poland_presentation.pdf

Workshop on quality and nutrition value of organic milk and meat
Provedor de dados: 21
Autores: Steinshamn, Håvard; Sakowski, Tomasz.
The workshop was arranged at the Institute of Genetics and Animal Breeding PAS in Jastrzębiec (IGAB), Poland, 19.-20. November 2009. The aim of the workshop was to encourage cooperation between Norwegian and Polish scientists specialized in organic animal breeding and organic milk and meat production. The organic market in Europe is growing annually from 2 to 15% depending on a country. Establishing scientific contacts with Norwegian researchers will positively influence the development of Polish organic scientific sector, which will transfer further the obtained knowledge and experience direct to the farmers. The workshop enabled Norwegian scientists to establish contacts with scientists from Poland and from other Central-European countries. The agenda of...
Tipo: Other
Palavras-chave: Dairy cattle Food security; Food quality and human health Beef cattle Feeding and growth Pigs.
Ano: 2009
URL: http://orgprints.org/17307/1/Minutes_PNRF_20.11.2009_.pdf

Effects of supplementing mid-lactation dairy cows with seaweed and vitamin E on plasma and milk α-tocopherol and antibody response to immunization
Provedor de dados: 21
Autores: Kidane, Alemayehu; Nesheim, Ingvild Luteberget; Larsen, Hans Jørgen S.; Thuen, Erling; Jensen, Søren K.; Steinshamn, Håvard.
The objective of the current experiment was to compare the effects of supplementing mid-lactation dairy cows with  all-rac-α-tocopheryl acetate (SyntvE), RRR-α-tocopheryl acetate (NatvE) or seaweed meal (Seaweed) in the presence  of a Control group (no supplemental vitamin E or seaweed) on the concentration of α-tocopherol in plasma and  milk, and antibody response following immunization. The hypothesis was that supplementation of dairy cows  with vitamin E, regardless of its form, would increase plasma and milk α-tocopherol compared to the control  diet and this incremental response would be bigger with NatvE than SyntvE. Furthermore, it was hypothesized  that vitamin E, regardless of its form, will provide an improved adaptive immune response to...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2015
URL: http://orgprints.org/29289/1/Kidane%20et%20al%202015%20Effects%20of%20supplementing%20mid-lact%20dairy%20cows%20vitamin%20E%20and%20seaweed.pdf

Effect of legume–grass silages and a-tocopherol supplementation on fatty acid composition and a-tocopherol, b-carotene and retinol concentrations in organically produced bovine milk
Provedor de dados: 21
Autores: Höjer, Annika; Adler, Steffen; Martinsson, Kjell; Jensen, Søren K.; Steinshamn, Håvard; Thuen, Erling; Gustavsson, A.-M.
Two feeding experiments were performed to study the effects of silage botanical composition, regrowth interval and α-tocopherol supplementation on the fatty acid (FA) composition and α-tocopherol, β-carotene and retinol concentrations of milk. In experiment 1, 24 Swedish Red dairy cows were fed two- or three-cut red clover-grass silages (R2 and R3, respectively), or two-cut birdsfoot trefoil-grass silage (B2). In experiment 2, 16 Norwegian Red dairy cows were fed short-term ley silage with red clover (S3) or long-term ley silage with white clover (L3) in combination with supplementation of RRR-α-tocopheryl acetate (1,600 mg/day). The FA proportions in the milk and the recoveries of C18:2n-6 and C18:3n-3 were higher on the red clover diets R2 and S3 than on...
Tipo: Journal paper
Palavras-chave: Dairy cattle; "Organics" in general; Pasture and forage crops.
Ano: 2012

High Nitrogen Costs of Dairy Production in Europe: Worsened by Intensification
Provedor de dados: 21
Autores: Bleken, Marina Azzaroli; Steinshamn, Håvard; Hansen, Sissel.
Intensification of agriculture has been proposed as one way of minimizing emissions per unit of product, apparently legitimizing the ongoing structural changes in agriculture. We have investigated the relationship between the farming intensity and the nitrogen (N) dissipation by calculating the overall N emission factor (E: total N surplus per unit of N in the produce) from several studies of dairy farms, covering a wide range of environments and production intensities. Fundamental steps were 1) the distinction between trophic levels, mineral, plant and animal N; and 2) the inclusion of N losses related to bought feed. The results show that E increases significantly with the production intensity of the dairy farm. The tradition for separate optimization of...
Tipo: Journal paper
Palavras-chave: Dairy cattle; Farm nutrient management; Air and water emissions.
Ano: 2005
URL: http://orgprints.org/6942/1/Bleken_etal__2005_Nitrogen_cost_of_dairy_production.pdf

Effect of feeding vitamin E from different sources on the immune system and intestinal microbiota in small ruminants. Presentation of an on going Norwegian project
Provedor de dados: 21
Autores: Novoa-Garrido, Margarita; Aanensen, Lise; Jensen, Søren K.; Steinshamn, Håvard.
Vitamin E is important for ruminants to maintain an optimal immune function, reproduction traits and a high quality of milk and meat. Synthetic vitamin E consists of 87.5% tocopherol molecules with a non-natural configuration and is biological ineffective.   The aim of this project is to study the effects of supplementing the diets with seaweed meal or oil seeds extracts as natural vitamin E sources on the immune system and gastrointestinal microbiota in sheep and their off-springs. Of special interest is the group fed with seaweed meal, since seaweed is an abundant and easy accessible raw material on the Norwegian coastline with a huge economical potential.  The study includes 40 ewes and their future lambs. The animals will be followed from mating until...
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth; Sheep and goats.
Ano: 2010
URL: http://orgprints.org/18827/1/Poster.pptx

Effects of Cattle Slurry on the Growth Potential and Clover Proportion of Organically Managed Grass–Clover Leys
Provedor de dados: 21
Autores: Steinshamn, Håvard.
The growth potential of grass-clover leys as influenced by cattle slurry application and clover content was studied in field experiments during three growing seasons at four locations. A grassland growth model was used to quantify growth potential and to separate the influence of weather variables from factors related to the plant stand. Application of cattle slurry increased the initial relative growth rate (R-s), on average from 0.21 to 0.23 g g(-1) day(-1) of the spring growth. In regrowth the effect of cattle slurry was less pronounced. The effect of cattle slurry declined with increasing R-s of the unfertilized treatment and rose with increasing rate of ammonium N applied by the slurry. The positive response to cattle slurry application on R-s was...
Tipo: Journal paper
Palavras-chave: Pasture and forage crops; Farm nutrient management; Composting and manuring.
Ano: 2001
URL: http://orgprints.org/6009/1/cattle_slurry_growth_rate_acta_scand_steinshamn_2001.pdf

Effect of clover species in grass-clover silages and concentrate supplementation on milk fatty acid composition
Provedor de dados: 21
Autores: Steinshamn, Håvard; Thuen, Erling; Brenøe, Ulrik Tutein.
The effect of clover species and level of concentrate supplementation on milk fatty acid (FA) composition has been studied. White (WC) and red clover (RC) grown in mixture with grasses were preserved in round bales and fed to autumn calving dairy cows during the first 10 weeks of lactation. Milk FA was higher in linolenic acid, vaccenic acid and rumenic acid for RC than for WC silage (0.90 vs. 0.79 %, 1.52 vs. 1.36 %, 0.90 vs. 0.75 % for these 3 FA, re-spectively), and RC silage gave a higher n-3/n-6 milk FA ratio than WC (0.98 vs. 0.72). Concentrate sup-plementation decreased the level of vaccenic acid (1.21 vs. 1.68 %), linolenic acid (0.63 vs. 1.05 %) and the n-3/n-6 ratio (0.55 vs. 1.16) as compared with no supplementation, and the effect of...
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Animal husbandry.
Ano: 2006
URL: http://orgprints.org/7217/3/Steinshamn_paper_milk_quality_revised.doc

Immunological effects of feeding different sources of vitamin E and seaweed in a sheep herd during the winter season
Provedor de dados: 21
Autores: Novoa-Garrido, Margarita; Aanesen, Lise; Lind, Vibeke; Larsen, Hans J.S.; Govasmark, Espen; Steinshamn, Håvard.
In winter fed organic raised sheep inadequate plasma vitamin E levels is common and therefore  supplementation is recommended. The objective of the present work was to test the supplementation  of natural vitamin E and seaweed meal on the immune status of ewes and their offspring.  Forty Norwegian White Sheep ewes were randomly allocated to three supplementation treatments:  natural vitamin E, synthetic vitamin E, seaweed meal, and control. The feeding experiment lasted  the entire indoor feeding period. Ewes and newborn lambs were vaccinated against different environmental  microorganisms and pathogens. Different immunological parameters were measured.  Supplementing the ewes with natural vitamin E had positive effect on immunity against Mycobacterium...
Tipo: Conference paper, poster, etc.
Palavras-chave: Sheep and goats; Health and welfare.
Ano: 2012
URL: http://orgprints.org/21668/1/Novoa-Garrido_et_al_2012_Immunology_sheep.pdf

Composition differences between organic and conventional meat: a systematic literature review and meta-analysis
Provedor de dados: 21
Autores: Srednicka-Tober, Dominika; Baranski, Marcin; Seal, Chris; Sanderson, Roy; Benbrook, Charles; Steinshamn, Håvard; Gromadzka-Ostrowska, Joanna; Rembialkowska, Ewa; Skwarło-Sonta, Krystyna; Eyre, Mick; Cozzi, Giulio; Krogh Larsen, Mette; Jordon, Teresa; Niggli, Urs; Sakowski, Tomasz; Calder, Philip C.; Burdge, Graham C.; Sotiraki, Smaragda; Stefanakis, Alexandros; Yolcu, Halil; Stergiadis, Sokratis; Chatzidimitriou, Eleni; Butler, Gillian; Stewart, Gavin; Leifert, Carlo.
Demand for organic meat is partially driven by consumer perceptions that organic foods are more nutritious than non-organic foods. However, there have been no systematic reviews comparing specifically the nutrient content of organic and conventionally produced meat. In this study, we report results of a meta-analysis based on sixty-seven published studies comparing the composition of organic and non-organic meat products. For many nutritionally relevant compounds (e.g. minerals, antioxidants and most individual fatty acids (FA)), the evidence base was too weak for meaningful meta-analyses. However, significant differences in FA profiles were detected when data from all livestock species were pooled. Concentrations of SFA and MUFA were similar or slightly...
Tipo: Journal paper
Palavras-chave: Production systems Systems research and participatory research Processing; Packaging and transportation Consumer issues.
Ano: 2016
URL: http://orgprints.org/36390/1/srednicka-tober-etal-2016-BritishJNutrition-Vol115-Issue6-p994-1011.pdf

Phytoestrogens and Their Metabolites in Bulk-Tank Milk: Effects of Farm Management and Season
Provedor de dados: 21
Autores: Adler, Steffen A.; Purup, Stig; Hansen-Møller, Jens; Thuen, Erling; Steinshamn, Håvard.
Phytoestrogens have structures similar to endogenous steroids and may induce or inhibit the response of hormone receptors. The objectives of the present study were to compare the effects of long-term vs. short-term grassland management in organic and conventional dairy production systems, compare organic and conventional production systems and assess seasonal variation on phytoestrogen concentrations in bulk-tank milk. The concentrations of phytoestrogens were analyzed in bulk-tank milk sampled three times in two subsequent years from 28 dairy farms: Fourteen organic (ORG) dairy farms with either short-term or long-term grassland management were paired with 14 conventional (CON) farms with respect to grassland management. Grassland management varied in...
Tipo: Journal paper
Palavras-chave: Production systems Dairy cattle Food security; Food quality and human health.
Ano: 2015
URL: http://orgprints.org/29287/7/29287.pdf

A comparative study of clinical manifestations, haematological and serological responses after experimental infection with Anaplasma phagocytophilum in two Norwegian sheep breeds
Provedor de dados: 21
Autores: Stuen, Snorre; Grøva, Lise; Granquist, Erik G; Sandstedt, Karin; Olesen, Ingrid; Steinshamn, Håvard.
Background: It has been questioned if the old native Norwegian sheep breed, Old Norse Sheep (also called  Norwegian Feral Sheep), normally distributed on coastal areas where ticks are abundant, is more protected against  tick-borne infections than other Norwegian breeds due to a continuously high selection pressure on pasture. The  aim of the present study was to test this hypothesis in an experimental infection study.  Methods: Five-months-old lambs of two Norwegian sheep breeds, Norwegian White (NW) sheep and Old Norse  (ON) sheep, were experimentally infected with a 16S rRNA genetic variant of Anaplasma phagocytophilum (similar  to GenBank accession number M73220). The experiment was repeated for two subsequent years, 2008 and 2009,  with the use of 16...
Tipo: Journal paper
Palavras-chave: Sheep and goats; Health and welfare.
Ano: 2011
URL: http://orgprints.org/19867/1/PAPER_III.pdf

PhytoMilk - Open seminar
Provedor de dados: 21
Autores: Gustavsson, Anne-Maj; Purup, Stig; Krogh Jensen, Søren; Steinshamn, Håvard; Thuen, Erling; Nadeau, Elisabet; Kuusela, Eeva.
Programme for open seminar for the PhytoMilk project held at Studentersamfundet, UMB, Ås, Norway, 23 June 2011
Tipo: Other
Palavras-chave: Dairy cattle; Pasture and forage crops; Health and welfare.
Ano: 2011
URL: http://orgprints.org/19600/1/PhytoMilk_Seminarium.pdf

Gastrointestinal metabolism of phytoestrogens in lactating dairy cows fed silages with different botanical composition
Provedor de dados: 21
Autores: Njåstad, Kari Marie; Adler, Steffen A.; Hansen-Møller, Jens; Thuen, Erling; Gustavsson, Anne-Maj; Steinshamn, Håvard.
Dietary phytoestrogens are metabolized or converted in the gastrointestinal tract of ruminants, only limited knowledge exists on the extent and location of this conversion in vivo. The objective of this study was to quantify the gastro-intestinal metabolism of phytoestrogens in lactating dairy cows fed silages with different botanical composition. Four lactating rumen cannulated Norwegian Red cattle were assigned to a 4?4 Latin square with 1 cow per treatment period of 3 wk. The 4 treatment silages were prepared from grasslands with different botanical compositions: organically managed short-term timothy (Phleum pratense L.) and red clover (Trifolium pratense L.) ley (2 yr old: ORG-SG); organically managed long-term grassland with a high proportion of...
Tipo: Journal paper
Palavras-chave: Dairy cattle Food security; Food quality and human health Feeding and growth.
Ano: 2014
URL: http://orgprints.org/27827/1/Njaastad%20et%20al%202014%20Gastrointestinal%20metabolism%20of%20phytoestrogens%20in%20dairy%20cows.pdf

CLOSING THE PLANT-ANIMAL LOOP: A PREREQUISITE FOR ORGANIC FARMING
Provedor de dados: 21
Autores: Bleken, Marina A.; Steinshamn, Håvard; Thuen, Erling; Koesling, Matthias.
An analysis of a number of published surveys of dairy farms in Europe is used to exemplify the consequences of the use of external feed on nitrogen loss from organic animal productions. It is concluded that the present international regulations are not adequate to enforce the adoption of environmentally friendly and sustainable organic production systems, in harmonious balance between crop production and animal husbandry.
Tipo: Conference paper, poster, etc.
Palavras-chave: Production systems.
Ano: 2005
URL: http://orgprints.org/4304/3/Bleken_etal_4p_revised%2Ded.doc

Newsletter Barkcure No. 2
Provedor de dados: 21
Autores: Steinshamn, Håvard; Sørheim, Kristin; Blomstrand, Berit Marie; Ptochos, Sokratis; Athanasiadou, Spiridoula; Woolsey, Ian; Enemark, Heidi; Aasen, Inga Marie; Mahnert, Karl-Christian.
The second Newsletter for the research project called “Condensed tannins from Norwegian pine and spruce bark - antiparasitic effects and potential commercial exploitation”
Tipo: Report
Palavras-chave: Animal husbandry; Health and welfare.
Ano: 2018
URL: http://orgprints.org/34240/1/Barkcure%20Des%202018%20%20web%2013%20des%202018.pdf

Effect of forage legumes on milk quality – a review
Provedor de dados: 21
Autores: Steinshamn, Håvard.
The review confirms that feeding legume silage leads to higher DMI and milk production than grass. White clover is superior to red clover and red clover to lucerne in milk yield relative to intake. Milk fat content is lower on red clover than on grass diets and red clover yield milk with lower protein content than white clover and lucerne. Red clover yields milk with higher proportion of the fatty acids C18:2n-6 and C18:3n-3 than grass and higher content og equol than grass and white clover.
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Pasture and forage crops Dairy cattle Feeding and growth.
Ano: 2009
URL: http://orgprints.org/16853/1/Effect_of_forage_legumes_on_milk_quality.pdf

Growth and carcass quality of suckler calves grazing at the farm or in the mountain
Provedor de dados: 21
Autores: Steinshamn, Håvard; Höglind, Mats; Havrevoll, Øystein; Saarem, Kristin; Lombnæs, Inger Helene; Svendsen, Asgeir.
The objective was to examine the effect of mountain grazing on the growth and meat quality of suckler calves. Suckler calves with their dams were raised on either cultivated pasture (C) or free range on mountain/forest pasture (M) on four and five commercial farms in 2006 and 2007, respectively. The M included different vegetation types from open, grass-dominated meadows to forests with patches of grasses, herbs and shrubs among the trees. All calves were slaughtered at the end of the grazing season at an average age of 203 (2006) and 193 days (2007). On average, there was no effect of pasture type on production traits except for carcass fatness that was higher on M than on C. In 2006, significantly higher live weight gain and carcass weight were found in...
Tipo: Conference paper, poster, etc.
Palavras-chave: Feeding and growth; Beef cattle.
Ano: 2008
URL: http://orgprints.org/13812/1/Steinshamn_etal_2008.pdf

The unique properties of red clover in the diet of ruminants
Provedor de dados: 21
Autores: Steinshamn, Håvard.
Grassland legumes are essential in organic ruminant livestock production due to their ability to fix atmospheric nitrogen (N), providing high yields of high feeding value without N fertilization. White clover (Trifolium repens L.) and red clover (Trifolium pratense L.) are the most important legumes of temperate grasslands with white clover as the most widely used. New research has reviled new properties of red clover that may affect animal performance and product quality significantly. Red clover containing diets have increased the production of milk and meat (compared with grasses) and the content of beneficial fatty acids in milk and meat (compared with grasses and other legumes), improved the efficiency of feed N utilization (compared with Medicago...
Tipo: Conference paper, poster, etc.
Palavras-chave: Food security; Food quality and human health Pasture and forage crops Feeding and growth.
Ano: 2008
URL: http://orgprints.org/14521/1/Steinshamn_final.pdf

Driftsmåte og engalder påvirker melkekvaliteten
Provedor de dados: 21
Autores: Adler, Steffen; Steinshamn, Håvard; Jensen, Søren K.
Fettsyresamensetning og innhold av vitaminer i melk ble i stor grad påvirket av sesong og produksjonssystem og i mindre grad av engalder. Beitesesongen hadde gunstig effekt på fettsyresammensetning sammenlignet med innefôringsperioden, mens økologisk driftsform hadde gunstige effekter som økt andel av C18:3c9,12,15 og negative effekter som økt andel mettede fettsyrer. Hovedfaktorene bak de observerte effektene antas å være fôrrasjonens andel av kraftfôr, beiteopptak, rødkløver og kraftfôrets innhold av lipider.
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health Feeding and growth.
Ano: 2011
URL: http://orgprints.org/18819/1/Adler_Driftsm%C3%A5te_og_engalder_HFM11.pdf

Utilization of nitrogen (N) and phosphorus (P) in an organic dairy farming system in Norway
Provedor de dados: 21
Autores: Steinshamn, Håvard; Thuen, Erling; Bleken, Marina Azzaroli; Brenøe, Ulrik Tutein; Ekerholt, Georg; Yri, Cecilie.
Inputs of N and P, flows through the soil–plant–animal pathway and removals by products were recorded for 3 years at the organically managed prototype dairy farm ‘Frydenhaug’ in Norway to assess the transfer efficiencies of N and P within and at the farm level. Nutrient balances and efficiency (N or P in products divided by N or P in inputs) were compared to data from other studies of dairy farm systems in Europe. Plant production on the farm covered nearly all the needs by the herd. However, about 10% of the plant production was sold as cash crop and about the same amount was bought as feed. At the farm level, ‘Frydenhaug’ realized annually and on average lower surpluses and higher N or P efficiencies than found in most studies concerned. On average, N...
Tipo: Journal paper
Palavras-chave: Nutrient turnover; Pasture and forage crops; Dairy cattle; Farming Systems.
Ano: 2004
URL: http://orgprints.org/2680/1/2680.pdf

Produksjon og utnytting av gjenvekst ved høge avdråttsnivå
Provedor de dados: 21
Autores: Bakken, Anne Kjersti; Steinshamn, Håvard.
Kyr med høg avdrått må få energirikt grovfôr frå eng som er tidleg og hyppig slått, og der gjenvekstar utgjer ein stor del av årsavlinga. Mellom vårvekst og gjenvekst vil det vere variasjon i proteininnhald og fiberkvalitet. Det trengst meir kunnskap om korleis ein kan balansere dei ulike kvalitetane i ei målretta fôring.
Tipo: Conference paper, poster, etc.
Palavras-chave: Pasture and forage crops; Dairy cattle; Feeding and growth.
Ano: 2010
URL: http://orgprints.org/16850/1/Bakken_Steinshamn_Produksjon_og_utnytting_av_gjenvekst_2010.pdf

Phyto-oestrogens and their metabolites in milk produced on two pastures with different botanical compositions
Provedor de dados: 21
Autores: Adler, Steffen A.; Purup, Stig; Hansen-Møller, Jens; Thuen, Erling; Gustavsson, Anne-Maj; Steinshamn, Håvard.
Phyto-oestrogens are a group of secondary plant metabolites that may bind to oestrogen receptors and exert oestrogenic or anti-oestrogenic effects in humans and can protect against cancer diseases. When ingested by dairy cows, phyto-oestrogens can be metabolised and transferred to the milk. The objective of this study was to assess the effects of grazing a recently established pasture containing red clover (Trifolium pratense L.) and an older pasture containing a variety of sown and unsown plant species on milk concentrations of phyto-oestrogens. Sixteen Norwegian Red dairy cows [mean (standard deviation); body weight 599 (45.1) kg, stage of lactation 73 (15.0) d in milk, milk yield 29.9 (2.90)  kg/d at the start of the experiment] were divided into two...
Tipo: Journal paper
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health.
Ano: 2014
URL: http://orgprints.org/25723/7/25723.pdf

Effect of short-term versus long-term grassland management and seasonal variation in organic and conventional dairy farming on the composition of bulk tank milk
Provedor de dados: 21
Autores: Adler, Steffen A.; Jensen, S.K.; Govasmark, Espen; Steinshamn, Håvard.
Bulk tank milk from 28 dairy farms was sampled every second month for 2 yr to assess the effects of grassland management, production system and season on milk fatty acid (FA) composition, concentrations of fat-soluble vitamins, Se, and milk sensory quality. Grassland management varied in terms of time since establishment. Short-term grassland management (SG) was defined as establishment or reseeding every fourth year or more often, and long-term grassland management (LG) was defined as less frequent establishment or reseeding. Fourteen organic (ORG) dairy farms with either short-term or long-term grassland management were paired with 14 conventional (CON) farms with respect to grassland management. Within ORG farms, SG farms differed from LG farms in...
Tipo: Journal paper
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health.
Ano: 2013
URL: http://orgprints.org/23130/1/Adler%20et%20al%202013%20Effects%20short-term%20long-term%20grassland%20management%20seasonal%20variation%20oganic%20conventional%20dairy%20farming%20composition%20bulk%20tank%20milk.pdf

Effects of clover-grass silages and concentrate supplementation on the content of phytoestrogens in dairy cow milk
Provedor de dados: 21
Autores: Steinshamn, Håvard; Purup, Stig; Thuen, Erling; Hansen-Møller, Jens.
A 2 × 2 factorial continuous experiment was conducted with 28 Norwegian Red dairy cows in early lactation to compare milk content of phytoestrogens when feeding ad libitum white clover (WCS) or red clover (RCS) grass silages prepared from the second and third cut without and with 10 kg/d supplementation of a standard concentrate. The cows were offered either RCS or WCS for 88 d (period 1) and thereafter a mixed red clover-white clover-grass silage for 48 d (period 2). Total dry matter intake and milk yield were not affected by forage type but increased with concentrate supplementation. Intake of isoflavones was several times greater in RCS than in WCS, whereas intake of lignans was  greater in WCS. Concentrate supplementation reduced the intake of most...
Tipo: Journal paper
Palavras-chave: Food security; Food quality and human health Dairy cattle Animal husbandry Feeding and growth.
Ano: 2008
URL: http://orgprints.org/13810/1/Steinsham__etal_2008_Effects_clover%2Dgrass_silages_conc_suppl_phytoestrogens.pdf

Melkas innhold av fytoøstrogener påvirkes av engdriftsmåte og produksjonssystem
Provedor de dados: 21
Autores: Adler, Steffen; Höjer, Annika; Njåstad, Kari Marie; Purup, Stig; Hansen-Møller, Jens; Thuen, Erling; Gustavsson, Anne-Maj; Martinsson, Kjell; Steinshamn, Håvard.
Engdriftsmåte som gir høyt innhold av rødkløver i grovfôret gir høyt innhold av equol i melk. Produksjonssystem hadde mindre betydning i denne studien.
Tipo: Conference paper, poster, etc.
Palavras-chave: Dairy cattle Pasture and forage crops Farming Systems Food security; Food quality and human health.
Ano: 2013
URL: http://orgprints.org/23137/1/Adler%20et%20al%202013%20Fyto%C3%B8strogen%20i%20melk%20og%20driftsm%C3%A5te%20HFM2013.pdf

Bærekraftig verdiskaping i verdsarvområde
Provedor de dados: 21
Autores: Sørheim, Kristin; Barstad, Johan; Bergslid, Ildri (Rose) Kristine; Fet, Annik Magerholm; Flø, Bjørn Egil; Lande, Unni Støbet; Solemdal, Liv; Steinshamn, Håvard; Velle, Liv Guri.
Lokal verdiskaping basert på utmarka i verdsarvområda Vestlandsk fjordlandskap kan ikkje sjåast isolert, men er tett knytt til heile samfunnsutviklinga på desse stadene. Det tradisjonelle landbruket i desse områda har skapt verdfulle naturgode som biologisk mangfald, opne turområde med høg rekreasjonsverdi, turstiar og anna. Fleire av desse naturgoda er viktige for reiselivsnæringa. Kulturlandskapet er også viktig for verdsarvstatusen i seg sjølv, ettersom dette er ein viktig del av kjerneverdiane til området (OUV).   Utviklinga i landbruket gjer at tungdrivne areal også i verdsarvområda går ut av bruk. Opphøyr eller låg bruksintensitet går spesielt ut over utmarksressursane og dei seminaturlege naturtypane. Utmarka i Geirangerfjordområdet er særleg trua,...
Tipo: Report
Palavras-chave: Farm economics; Farming Systems; Social aspects; Biodiversity and ecosystem services.
Ano: 2019
URL: http://orgprints.org/36300/1/NORS%C3%98K%20RAPPORT%208%202018%20Berkraftig%20verdiskaping%20i%20verdsarvomr%C3%A5de%20web.pdf