不同微生态制剂对奶牛产奶性能和乳品质的影响

目的]研究旨在探讨不同微生态制剂对奶牛产奶性能和乳品质的影响，方法]将40头荷斯坦奶牛随机分成4个处理组，对照组饲喂基础日粮，微生态制剂1组、微生态制剂2组、微生态制剂3组分别在基础日粮中添加0.1%的三种微生态制剂产品。结果]结果显示：与对照组相比，微生态制剂1组、微生态制剂2组、微生态制剂3组的平均日产奶量、乳蛋白率均显著增加（P＜0.05），体细胞数均显著降低（P＜0.05）。与对照组相比，微生态制剂1组的平均日采食量、乳脂率均显著增加（P＜0.05），料奶比显著降低（P＜0.05）。与微生态制剂2组相比，微生态制剂1组的平均日产奶量、乳蛋白率均显著增加（P＜0.05）。结论]说明三种微生态制剂产品均能在一定程度上提高奶牛的产奶性能和乳品质，以微生态制剂产品1的作用效果最好。

Effects of different probiotics on milk production performance and milk quality of dairy cows

In order to study the effects of different probiotics on milk production performance and milk quality of dairy cows, 40 Holstein dairy cows were randomly divided into four treatment groups. The control group was fed with basic diet. Three probiotics products were added to the basic diet: Probiotics group 1, probiotics group 2 and probiotics group 3, respectively. The results showed that compared with the control group, the average daily milk yield and milk protein rate of microecological preparation group 1, microecological preparation group 2 and microecological preparation group 3 increased significantly(P<0.05), and the number of somatic cells decreased significantly(P<0.05). Compared with the control group, the average daily feed intake and milk fat rate of microecological preparation 1 group increased significantly (P<0.05), and the feed milk ratio decreased significantly(P<0.05). Compared with microecological preparation 2 group, the average daily milk yield and milk protein rate of microecological preparation 1 group increased significantly(P<0.05). It shows that the three microecological products can improve the milk production performance and milk quality of dairy cows to a certain extent, and the effect of microecological product 1 is the best.