Effects of yeast culture on the growth performance and ruminal fermentation function of Sinan cattle
The experiment aimed to explore the effects of yeast culture on the growth performance and ruminal fermentation function of Sinan cattle,and to determine the feasibility of applying yeast culture in the breeding of Sinan cattle.The trial selected 32 healthy Sinan cattle with no significant difference in body weight,randomly divided into four groups,with each Sinan cattle as a replicate.The Sinan cattle in each group were fed experimental feed supplemented with 0(control group),40,80,160 g/(cattle·day)of yeast culture.The pre-feeding period was one week,and the formal experimental period was 60 days.The results showed that compared with the control group,the final weight,total weight gain,and average daily weight gain of the Sinan cattle in the 80 g supplemental group were significantly increased(P<0.05),and the feed-to-gain ratio was significantly reduced(P<0.05).The concentration of microbial protein in the rumen was significantly increased(P<0.05),and the concentration of ammonia nitrogen was significantly reduced(P<0.05).The concentration of propionic acid in the rumen was significantly increased(P<0.05).Compared with the control group,the total weight gain of the Sinan cattle in the 40 g supplemental group and 160 g supplemental group was significantly increased(P<0.05),and the concentration of propionic acid in the rumen was significantly increased(P<0.05).There was a trend of increase in the final weight,average daily weight gain,and microbial protein concentration in the rumen(P>0.05),and a trend of decrease in the feed-to-gain ratio and ammonia nitrogen concentration in the rumen(P>0.05).The study indicates that an appropriate amount of yeast culture can improve the growth performance of Sinan cattle and improve the ruminal fermentation function.Based on the comprehensive data results,the optimal addition level of yeast culture is 80 g/(cattle·day).
Yeast cultureSinan cattleGrowth performanceRuminal fermentation function
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NSTL
万方数据
