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