日粮不同精粗比对思南杂交肉牛生产性能与血液生化指标的影响

Effect of different concentrate to coarse ratio in diet on production performance and blood biochemical indices of Sinan crossbred beef cattlee

试验旨在研究日粮不同精粗比对思南黄杂交肉牛生产性能与血液生化指标的影响,选择体重相近的12头思南杂交肉牛随机分为4组。A、B、C、D组精粗比分别为3:7、4:6、5:5、6:4。结果表明:C组和D组末重、增重和平均日增重极显著高于A组和B组(P<0.01);C组的平均日采食量和料重比显著高于A组和B组(P<0.05)。C组谷丙转氨酶(ALT)显著高于A组和B组(P<0.05);C组谷草转氨酶(AST)显著高于B组(P<0.05),极显著高于A组(P<0.01)。研究表明,日粮精粗比5:5时思南杂交肉牛的生长性能较佳,平均日增重可达1.59 kg/d。

The paper was to study the effect of different concentrate to coarse ratio on production performance and blood biochemical indices on Sinan crossbred beef cattle.Twelve Sinan crossbred beef cattles with approximate weight were randomly divided into four groups,and the ratio of concentrate to forage of group A,B,C and D were 3:7,4:6,5:5,6:4 respectively.The results showed that the final weight,weight gain and average daily gain of group C and D were significantly higher than those of group A and B(P<0.01).The average daily feed intake and feed weight ratio of group C were significantly higher than those of group A and group B(P<0.05).The ALT of group C was significantly higher than that of groups A and B(P<0.05),the AST of group C was significantly higher than that of group B(P<0.05),and it was extremely significantly higher than that of group A(P<0.01).The research indicated that the growth performance of Sinan hybrid beef cattle at a dietary ratio of 5:5 was better,with an average daily gain of 1.59 kg/d.