Effect of dietary metabolizable protein level and live yeasts on ruminal fermentation and nitrogen utilization in lactating dairy cows on a high red clover silage diet
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- 作者：D.R. Ouellet ; Daniel.Ouellet@agr.gc.ca" class="auth_mail" title="E-mail the corresponding author ; J. Chiquette
- 关键词：ADF ; acid detergent fiber expressed inclusive of residual ash ; BW ; body weight ; CP ; crude protein ; DM ; dry matter ; HD ; highly deficient in metabolizable protein ; MD ; moderately deficient in metabolizable protein ; MP ; metabolizable protein ; MUN ; milk urea nitrogen ; N ; nitrogen ; aNDF ; neutral detergent fiber assayed with sodium sulfite and with a heat-stable α-amylase ; and expressed inclusive of residual ash ; NEL ; net energy of lactation ; NFC ; non-fiber carbohydrates ; NH3-N ; ammonia-N ; RDP ; rumen
- 刊名：Animal Feed Science and Technology
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：220
- 期：Complete
- 页码：73-82
- 全文大小：633 K
文摘
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Yeast and dietary protein were studied in dairy cows fed a red clover-based diet.
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Reducing metabolizable protein improved N efficiency and decreased N excretion.
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Ruminal isobutyrate and isovalerate were reduced by yeast supplementation.
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Diet supplemention with 10 g/d of Saccharomyces cerevisiae showed limited benefits.