EU regulations are forcing organic dairy producers to find ‘new’ protein sources. In 2000, the use of hexane-extracted feed was prohibited in organic dairy production, which ended the use of protein meals. The aim of organic farming is to compose a diet of 100% organic feed. It can be difficult to find high-quality organic protein feeds, since there is a shortage of organically produced feed with a high AAT-content. It would be convenient and economical to be able to produce protein feed locally. Cold pressed rapeseed cake is an excellent protein source in organic dairy production and results of our new study will hopefully show that field beans, peas and lupin are also useful protein sources.
Locally produced protein feeds and vitamin supply
Project managers: Birgitta Johansson and Elisabeth Nadeau, Department of Animal Environment and Health, SLU
There is a general ban on the use of synthetic vitamins in organic production in the whole EU but currently there is an exemption from this ban. It is of great interest to find new solutions.
The study will be performed at Tingvall Organic Dairy Research Farm (Hushållningssällskapet Väst) and will run for two lactations.
- Peas will be compared to field beans during the first lactation and to lupin during the second lactation.
- Both groups will be fed minerals without synthetic vitamins.
- Half the cows in each group will be fed semi-natural vitamin E for 3-4 weeks before calving to 2-3 weeks after calving.
- Blood and milk samples will be analysed for vitamins to examine the effects of adding semi-natural vitamin E during the critical time around calving.
- Milk yield, milk composition, health and fertility will be registered to determine effects of protein source.
Lindqvist, H. 2012. α-tocopherol and β-carotene in forages and their utilisation by dairy cows in organic production. Diss. (summary) Skara : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2012:15 ISBN 978-91-576-7651-1 [Doctoral thesis].
Lindqvist, H., Nadeau, E., Persson Waller, K., Jensen, S. K. and 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.
Lindqvist, H., Nadeau, E., Persson Waller, K., Jensen, S.K. och 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. Proc. The 2nd Nordic Feed Science Conference, 15-16 June, Uppsala, Sweden. Swedish University of Agricultural Sciences, Dept. Animal Nutrition Management. Report 277, 86-90.
Lindqvist, H., Nadeau, E., Persson-Waller, K., Jensen, S.K., Johansson, B. 2010.
Effects of RRR-α-tocopheryl acetate supplemented during the transition period on vitamin status in blood and milk of dairy cows. Poster at SLU 2010.