Effects of Rumen Protected Lysine and Methionine on Ruminal Fermentation and Roughage Degradability of Small-tail Han Sheep

doi:10.7668/hbnxb.2014.S1.027

Abstract

Abstract: This experiment was conducted to study effects of rumen protected Lysine and Methionine supplements on ruminant fermentation and roughages degradability of small-tail han sheep.A total of 10 small-tail han sheep((45±2.6) kg of body weight) with permanent rumen cannula were selected for the study.The study was conducted in three replicates,each of which lasted for 15 days(12 days of pre-testing period and 3 days of formal test period).Different supplements of protected l ysine and methionine were added into basal diet.Protected amino acids supplements had no effects on rumen pH,NH₃-N concentration and VFA concentration(P>0.05).Compared to control group,mycoprotein content in group I was higher(P<0.01).Appropriate protected amino acids supplements could significantly improve the DM,ADF rumen degradation rate(P<0.05) but not the CF,NDF ruminal degradation rates(P>0.05).It could be concluded from results that the appropriate supplement of protected Lysine and Methionine was 8.4,2.4 g/d per sheep under the experimental conditions,respectively.

Key words: Protected lysine, Protected methionine, Small-tail han sheep, Rumen fermentation parameters, Rumen degradability

CLC Number:

S826

LIN Ying-ting, WANG Li-hua, ZHU Feng-hua, LI Jiu-feng, YU Jing-jing. Effects of Rumen Protected Lysine and Methionine on Ruminal Fermentation and Roughage Degradability of Small-tail Han Sheep[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(S1): 129-135. doi: 10.7668/hbnxb.2014.S1.027.

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