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Effects of alternative protein sources on rumen microbes and productivity of dairy cows

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Author(s): Metha Wanapat

Journal: Maejo International Journal of Science and Technology
ISSN 1905-7873

Volume: 5;
Issue: 01;
Start page: 13;
Date: 2011;
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Keywords: yeast-fermented cassava chips | cassava hay | rumen microorganism | milk production | lactating dairy cows

ABSTRACT
This experiment was conducted to investigate the effect of various protein sources on digestibility, rumen fermentation, milk yield and milk composition in dairy cows. Four Holstein Friesian native crossbred cows in early lactating were randomly assigned according to a 4x4 Latin square design. The dietary treatments containing different protein sources in concentrate diets were soybean meal (SBM), cassava hay (CH), Leucaena leucocephala (LL) and yeast-fermented cassava chips (YEFECAP), with ad libitum intake of urea-treated rice straw. Digestibility of DM, OM, NDF and ADF was not different among treatments (P>0.05) while CP digestibility was highest (P
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