摘要
试验旨在研究槲皮素对奶牛免疫功能、生产性能的影响。选取18头处于泌乳中期、泌乳量相近、体重相近、胎次相同健康荷斯坦奶牛,随机分为3组,每组6个重复,每个重复1头牛。对照组不添加槲皮素,高剂量槲皮素组为基础日粮+200 mg/kg槲皮素,低槲剂量槲皮素组为基础日粮+100 mg/kg槲皮素。试验期60 d。结果显示:低剂量槲皮素组奶牛血清的免疫球蛋白A (IgA)含量高于对照组,血清可溶性CD8抗原(sCD8)含量高于对照组。试验第60 d,高剂量槲皮素组牛奶中的总固形物含量最高,奶牛的粗脂肪和酸性洗涤纤维消化率明显高于对照组。低剂量槲皮素组奶牛的肠绒毛长度高于其他两组。研究表明,奶牛日粮中添加槲皮素对奶牛免疫功能具有积极影响。
The experiment was to study the effect of quercetin on immune function and production performance of dairy cows. A total of 18 healthy Holstein dairy cows with similar milk yield, body weight and parity in mid-lactation were randomly divided into three groups, with six replicates in each group and one cow in each replicate. The control group did not add quercetin, the high-dose quercetin group was basal diet + 200 mg/kg quercetin, and the low-dose quercetin group was basal diet + 100 mg/kg quercetin. The experiment lasted for 60 d. The results showed that the serum IgA content in low-dose quercetin group was higher than that in control group, and the serum sCD8 content in low-dose quercetin group was higher than that in control group. On 60 d of experiment, high-dose quercetin group had the highest effect on total solids content in milk. The digestibility of crude fat and acid detergent fiber in high-dose quercetin group was significantly higher than that in control group. The length of intestinal villi in low-dose quercetin group was higher than that in other two groups. The experiment indicates that quercetin supplementation has positive effects on immune function of dairy cows.
出处
《饲料研究》
CAS
北大核心
2022年第15期18-22,共5页
Feed Research
基金
吉林省教育厅2022年度科学技术研究项目“新型奶牛无抗饲料添加剂研发与推广(项目编号:JJKH20221366KJ)”
长春职业技术学院2020年度应用技术研发项目“新型饲料添加剂研发与推广(项目编号:02-3-2-NX010)”
2022年度吉林省职业教育与成人教育教学改革研究课题《“双高”建设视域下专业群‘双创一服’教学团队建设实践研究》(项目编号:2022ZCY201)。
关键词
槲皮素
奶牛
免疫功能
生产性能
quercetin
cow
immunity function
production performance
