复合菌培养物对奶牛产奶性能及体细胞数的影响

试验旨在研究日粮中添加复合菌培养物对奶牛产奶量、乳品质和体细胞数的影响。选择30头荷斯坦奶牛,分为对照组和试验组,对照组饲喂基础日粮,试验组在基础日粮中添加复合菌培养物400 g/(头·d),试验期为37 d。测定指标包括产奶量、乳脂率、乳蛋白率及体细胞数。结果表明,试验组奶牛产奶量比对照组增加6.84%(P>0.05);乳汁体细胞数下降率比对照组提高29.78%(P<0.05);两组奶牛乳脂、乳蛋白之间无明显差异(P>0.05)。本试验结果表明,复合菌培养物在降低体细胞数和改善奶牛产奶性能方面具有良好的效果。

Effect of Compound Bacteria Culture on Milk Production and Somatic Cell Counts of Dairy Cattle

The effect of compound bacteria culture on the milk production,milk quality and somatic cell counts of dairy cows were examined in this study. Thirty Holstein dairy cattles were selected and divided into test group and control group. The control group was fed with the basal diet,and the test group was fed with 400 g compound bacteria culture per cow for one day in the basal diet.The experiment lasted for 37 d. The milk production,milk fat,milk protein percentage and somatic cell counts were determined. The results showed that the milk production of test group increased 6.84% (P>0.05),and the decline rate of milk somatic cell counts increased 29.78% (P<0.05) compared with the control group. Milk fat and milk protein had no significant differences (P>0.05) between two groups. These results indicated that compound bacteria culture could improve the lactation ability and significantly reduce the somatic cell counts of dairy cattles.