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| Registros recuperados: 69 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 69 | |
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