酿酒酵母培养物对和牛育肥效果的影响

旨在研究日粮中添加酿酒酵母培养物对和牛育肥效果的影响。选用健康无病、体重相近的和牛374头,随机分成3组,A、B组为试验组,日粮中添加不同水平的酿酒酵母培养物,C组为对照组,日粮中不添加酵母培养物;各组试验和牛每天早、晚各饲喂1次,正试期45 d;试验结束后对各组和牛进行称重,计算并比较各组和牛在试验期间的日增重;采用粪筛分析法评价各组和牛的饲料消化率。结果表明,A、B组在试验期间的日增重均显著高于C组(P<0.05),且B组日增重最大;A、B组试验末粪筛的第3层比例较试验前上升,且试验末粪筛的第3层黄色玉米碎屑均比C组少。综上提示,育肥和牛日粮中添加酿酒酵母培养物可以提高其日增重和饲料转化率。

Effect of Dietary Supplementation of Saccharomyces cerevisiae Culture on Fattening Wagyu

This study was conducted to evaluate the influence of dietary supplementation of Saccharomyces cerevisiae culture on fattening Wagyu. A total of 374 healthy fattening Wagyu with similar weight were selected and assigned into the following three groups: group A and group B were set as experimental groups whose basal diet was supplemented with different levels of Saccharomyces cerevisiae culture, and group C served as control group and received no dietary supplementation;all of the fattening Wagyu fed three times daily (morning, noon and night), and the formal experiment lasted for 45 days;at the end of the experiment, the Wagyu in both experimental groups and control group were weighted, and the daily gain of the Wagyu in different groups during the experiment were statistically assessed;the feed digestibility of the Wagyu in different groups were evaluated by using manure screener. The results showed that the daily gain of group A and group B were significantly higher than group C (P<0.05), and the highest value was observed in group B;at the end of the experiment, the percent of bottom screen in group A and group B were elevated compared to that at the start of the experiment, and the content of yellow corn chips in bottom screen in group A and group B were fewer than group C. In conclusion, dietary supplementation of Saccharomyces cerevisiae culture in basal diet can improve the daily gain and feed digestibility of fattening Wagyu.