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| 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 & 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 |
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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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| 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 |
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