日粮中添加酵母培养物AYC-X6对犊牛生长发育的影响

目的]为研究在犊牛日粮中添加酵母培养物对犊牛生长发育的影响。方法]在宁夏固原现代农业园区肉牛繁育基地随机选取90头2.5月以上犊牛作为试验牛群,采用配对试验设计,试验分为2个处理组。结果]结果表明,试验组犊牛比对照组犊牛平均干物质采食量提高了14.9%,日增重提高了24.6%,饲料消耗降低了0.08%。体重提高了24.1%,体高、胸围、腹围、体斜长分别提高了5.1%,11.3%,12.8%,24.9%。试验组粪便分离筛第1,2,3层筛上物分别为15%,20%,65%。试验组血清总蛋白(BSA)、球蛋白(BGG)含量均显著高于对照组,谷丙转氨酶(ALT)、谷草转氨酶(AST)、碱性磷酸酶(ALP)含量均显著低于对照组。结论]在犊牛日粮中添加酵母培养物AYC-X6,能提高饲料消化率,促进犊牛生长发育,提高犊牛平均日增重和生长速度。提高血清总蛋白、球蛋白含量,降低谷丙转氨酶、谷草转氨酶、碱性磷酸酶水平,改善犊牛免疫能力。

Effect of Adding Yeast Culture AYC-X6 to Calf Diet on Growth and Development in Calves

Objective] The aim is to study the effect of adding yeast culture AYC-X6 to calf diet on growth and development in calves. Method] A total of 90 calf calves of 2.5 months or more were selected as experimental cattle in calf cattle breeding base. Paired experiment design was used to divide the calves into 2 groups. Results] The results showed that the average dry matter intake, daily gain and feed consumption of calves in the experimental group increased by 14.9%, 24.6% and 0.08% respectively compared with those in the control group. Body weight increased by 24.1%, body height, chest circumference, abdominal circumference and body oblique length increased by 5.1%, 11.3%, 12.8% and 24.9%, respectively. The contents of the first, second and third layers of fecal separation screens in the experimental group were 15%, 20% and 65% respectively. The serum total protein (BSA) and globulin (BGG) levels in the experimental group were significantly higher than those in the control group. The levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) in the experimental group were significantly lower than those in the control group. Conclusion] Adding yeast culture AYC-X6 to calf diet can improve feed digestibility, promote calf growth and development, and increase calf average daily gain and growth rate. The content of serum total protein and globulin were increased, the level of alanine aminotransferase, glutamic oxaloacetic aminotransferase and alkaline phosphatase were decreased, the immune ability of calves was improved.