摘要
[目的]研究不同剂量中草药添加剂对奶牛泌乳后期的泌乳性能、乳品质量、血清生化指标和免疫功能的影响。[方法]选取60头体重、胎次、泌乳期、泌乳量相近的泌乳后期荷斯坦牛,将奶牛随机分成4组:对照组、试验Ⅰ组、试验Ⅱ组、试验Ⅲ组,每组15头。对照组饲喂常规饲料,试验Ⅰ组、试验Ⅱ组和试验Ⅲ组在常规饲料基础上添加100 g/d、200 g/d、300 g/d中草药添加剂。整个试验周期为9周。[结果]从第2周开始,试验组产奶量显著增加(p<0.05)。试验Ⅱ组、试验Ⅲ组乳品质指标(乳脂率、乳糖率、乳蛋白率)、血清生化指标(白蛋白、球蛋白)、免疫指标(IgM、IgG、IL-2)显著高于对照组(p<0.05)。[结论]中草药添加剂可明显提高泌乳后期奶牛产奶量和乳品成分,改善代谢水平,增强免疫功能,200 g/d的效果最佳。这些研究结果为提高奶牛生产效益提供了参考依据。
[Objective]This study aimed to investigate the effects of different doses of herbal feed additives on lactation performance,milk quality,serum biochemical indices,and immune function in late lactating dairy cows.[Method]A total of 60 late lactating Holstein cows with similar body weight,parity,lactation period,and milk yield were selected and randomly divided into 4 groups:Control group,Experiment Ⅰ Experiment Ⅱ and Experiment Ⅲ,with 15 cows per group.The control group was fed conventional feed,while Experiment Ⅰ,Ⅱ and Ⅲ groups were supplemented with 100 g/d,200 g/d,and 300 g/d herbal additives,respectively,on the basis of conventional feed.The entire experimental period lasted for 9 weeks.[Result]From the second week,the milk yield in the experimental groups significantly increased(p<0.05).The milk quality indicators(milk fat rate,lactose rate,and milk protein rate),serum biochemical indicators(albumin and globulin),and immune indicators(IgM,IgG,and IL-2)in Experiment Ⅱ and Ⅲ groups were significantly higher than those in the control group(p<0.05).[Conclusion]Herbal feed additives significantly improved the milk yield and milk composition of late lactating dairy cows,enhanced metabolic levels,and boosted immune function,with the optimal effect at 200 g/d.These findings provide a reference for improving dairy cow production efficiency.
作者
衣文娟
YI Wenjuan(Animal Disease Prevention and Control Center,Qixia Shandong 265300)
出处
《中国乳业》
2025年第2期66-70,共5页
China Dairy
关键词
中草药饲料添加剂
奶牛
生产性能
血清生化
免疫
Chinese herbal feed additives
cow
production performance
serum biochemistry
immune
