复方中草药添加剂对围产期奶牛干物质采食量、生产性能及生殖激素的影响

Effects of different dose of compound Chinese herbal medicine additive on dry matter intake production performance and reproductive hormones of perinatal cow

本试验旨在探讨不同剂量复方中草药添加剂对围产期奶牛的生产性能及生殖激素等指标的影响。按照预产期、胎次和泌乳量相近的原则,选取24头围产前期荷斯坦奶牛,将其随机分为4组(每组6个重复,每个重复1头)。Ⅰ组饲喂基础饲粮,试验组每头分别在基础饲粮中添加100、200、300 g/d的复方中草药制剂,从产前21 d到产后21 d连续添加,正式期42 d。结果表明:(1)复方中草药添加剂可显著提高奶牛的干物质采食量(P<0.05)。而产前7 d至分娩,Ⅱ组、Ⅲ组、Ⅳ组的干物质采食量分别比Ⅰ组高9%、20%、7%(P<0.05),且Ⅲ组比Ⅱ组和Ⅳ组分别高出9%和11.6%,差异达到显著水平(P<0.05)。(2)复方中草药添加剂组围产期奶牛的日产奶量和乳成分有显著提高(P<0.05)。并且Ⅲ组、Ⅳ组奶牛的日平均产奶量较Ⅱ组分别提高了5%和6%(P<0.05),但Ⅲ组、IV组无显著差异;各处理组的干物质含量分别提高0.46%、0.48%、0.53%(P<0.05),乳糖含量分别提高0.02%、0.08%、0.12%(P<0.05);Ⅲ组和Ⅳ组奶牛乳蛋白率分别提高0.08%、0.07%(P<0.05)。(3)复方中草药对奶牛血清中E2、FSH、LH含量具有一定的调控作用,能缓解由E2剧烈变化引起的生理应激。由此可见,中草药复方添加剂能有效提高围产期奶牛干物质采食量、产奶量及乳品质,且能调节生殖激素,稳定产后生殖机能恢复。且每头以200 g/d剂量添加效果最佳。

This experiment aimed to explore the influence of different doses of compound Chinese herbal medicine additive on dry matter intake, production performance and reproductive hormones in perinatal cows.A total of 24 Holstein cows with similar calving date, parity, average milk production were randomly divided into 4 groups with 6 replicates of I each.The cows in control group （ I ） were fed basal diet, and others in experimental group （ Ⅱ ,Ⅲ , Ⅳ ） were fed the basal diet supplemented with 100,200,300 g/d Chinese herbal medicine per cow respectively.The experiment lasted for 42 days, from prenatal 21 days to postpartum 21 days.The results showed that： （1）compound Chinese herbal medicine additive could significantly increase the dry matter intake （DMI） of dairy cow（P 〈 0.05 ）.And prenatal 7 days to deliver,the DMI of Ⅱ , Ⅲ, Ⅳ group were increased by 9%,20% and 9% respectively compared with the control group（P 〈 0.05） ,groupⅢand Ⅱ were significantly increased by 9% and 11.6% respectively compared with group Ⅳ （P 〈 0.05）. （2）the milk production and milk composition in adding compound Chinese herbal medicine additive groups have significantly increased （P 〈 0.05 ）.And group Ⅲ and Ⅳ were significantly increased by 5% and 6% respectively compared with group Ⅱ （P 〈 0.05）, but group Ⅲ, Ⅳ had no significant difference;The dry matter contents of each treatment groups were increased by 0.46%, 0.48% and 0.46% respectively（P 〈 0.05）,lactose contents were increased by 0.02%,0.08% and 0.12% respectively （P 〈 0.05）;the cow milk protein rates of group m and Ⅳ were increased by 0.08% ,0.07% respectively （P 〈 0.05）. （3）the compound Chinese herbal medicine had a certain regulation effect on cow serum E2,FSH,LH levels,it could alleviate physiological stress caused by E2 dramatic change.In conclusion,the Chinese herbal medicine compound additive could improve the perinatal cows dry matter intake,improve the milk yield and milk quality,adjust the reproductive hormones and stable the postpartum reproductive function recovery.And adding in 200 g/d per cow was the best.