Tackling the future challenges of Organic Animal Husbandry - vTI

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! Agriculture and Forestry Research, Special Issue No 362 (Braunschweig, 2012) ISSN 0376-0723 Download: www.vti.bund.de/en/startseite/vti-publications/landbauforschung-special-issues.html tocopherol per unit of α-tocopherol consumed was 1.09 and 1.12 times greater in plasma and milk, respectively, when cows were fed RRR than All-rac. Seaweed supplementation had no effect on plasma or milk content of α-tocopherol. All-rac resulted in higher concentration of the synthetic isomers (RSS, RRS, RSR and 2S) in both plasma and milk than the other treatments. Table 2. Plasma and milk concentrations (mg/L) of α-tocopherol in dairy cow fed daily supplements of no vitamin E (Control), RRR-α-tocopheryl acetate (RRR), all-racα-tocopheryl acetate and seaweed (SW) (n = 24) Item Control RRR All-rac SW SEM P-value α-Tocopherol in plasma Total 9.99 c 13.17 a 11.27 b 10.13 c 0.632
RAHMANN G & GODINHO D (Ed.) (2012): Tackling the Future Challenges of Organic Animal Husbandry. Proceedings of the 2 nd OAHC, Hamburg/Trenthorst, Germany, Sep 12-14, 2012 Even in treatments with low α-tocopherol contribution from the supplements (SW and Control), the plasma concentration of α-tocopherol was high compared to other studies and 3 times higher than the level of 3 mg/L that is regarded as adequate (Beeckman et al. 2010, Lindqvist et al 2011). Even though the silage concentration of α-tocopherol (39 mg/kg DM) was not particularly high, but similar to levels observed in other studies (Beeckman et al. 2010, Lindqvist et al 2011), it is clearly adequate when the silage intake is as high as in the present study. The financial support from TINE SA, the Foundation for Research Levy on Agricultural Products, the Agricultural Agreement Research Fund and the Research Council of Norway is acknowledged. Suggestions to tackle the future challenges of organic animal husbandry Do organically managed dairy cows in mid and late lactation on diets with high intake of grassclover silage need extra supplement of vitamin E? References Allen VG, Pond KR, Saker KE, Fontenot JP, Bagley PC, Ivy RL, Evans RR, Schmidt RE, Fike JH, Zhang X, Ayad JY, Brown CP, Miller MF, Montgomery JL, Mahan J & Wester DB (2001). Tasco: Influence of a brown seaweed on antioxidants in forages and livestock-A review. Journal of Animal Science 79, E21- E31. Beeckman A, Vicca J, Van Ranst G, Janssens GPJ & Fievez V (2010): Monitoring of vitamin E status of dry, early and mid-late lactating organic dairy cows fed conserved roughages during the indoor period and factors influencing forage vitamin E levels. Journal of Animal Physiology and Animal Nutrition 94, 736-746. Commission regulation (EC) No 889/2008 of of 5 September 2008 laying down detailed rules for the implementation of Council Regulation (EC) No 834/2007 on organic production and labelling of organic products with regard to organic production, labelling and control. Official Journal L250, 1-84. Govasmark E, Steen A, Strom T, Hansen S, Singh BR & Bernhoft A (2005): Status of selenium and vitamin E on Norwegian organic sheep and dairy cattle farms. Acta Agriculturae Scandinavica Section A-Animal Science 55, 40-46. Jensen SK & Nielsen KN (1996) Tocopherols, retinol, β-carotene and fatty acids in fat globule membrane and fat globule core in cows' milk. Journal of Dairy Research 63, 565-574 Lindqvist H, Nadeau E, Waller KP, Jensen SK, Johansson B (2011): Effects of RRR-α-tocopheryl acetate supplementation during the transition period on vitamin status in blood and milk of organic dairy cows during lactation. Livestock Science 142, 155-163 Meglia GE, Jensen SK, Lauridsen C & Waller KP (2006): alpha-tocopherol concentration and stereoisomer composition in plasma and milk from dairy cows fed natural or synthetic vitamin E around calving. Journal of Dairy Research 73, 227-234. Weiss WP, Hogan JS & Wyatt DJ (2009): Relative bioavailability of all-rac and RRR vitamin E based on neutrophil function and total α-tocopherol and isomer concentrations in periparturient dairy cows and their calves. Journal of Dairy Science 92, 720-731 453
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Landbauforschung vTI Agriculture an
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Foreword Organic animal husbandry s
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Content RAHMANN G & GODINHO D (Ed.)
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Introduction RAHMANN G & GODINHO D
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Abstract RAHMANN G & GODINHO D (Ed.
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Discussion RAHMANN G & GODINHO D (E
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Factors Plant Height (cm) RAHMANN G
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