柴胡提取物对热应激奶牛生产性能和血液代谢的影响

发布时间：2018-05-02 19:32

本文选题：柴胡皂苷 + 柴胡多糖　；参考：《草业科学》2017年12期

【摘要】：为了研究日粮中添加不同剂量的柴胡(Radix bupleuri)提取物对热应激奶牛生理指标、生产性能和血液代谢的影响,采用完全随机区组试验设计,根据产奶量、泌乳天数、胎次将48头健康的泌乳后期荷斯坦奶牛随机分为4组,每组12头,在基础日粮中分别添加0、0.5、2.5、5.0g·kg~(-1)的柴胡提取物,试验期10周。结果表明,添加柴胡提取物对直肠温度、采食量、产奶量、乳蛋白产量和体细胞评分呈二次方程的影响(P0.05),采食量、产奶量和乳蛋白产量在0.5g·kg~(-1)添加水平时数值最大,直肠温度和体细胞评分在0.5g·kg~(-1)添加水平时数值最小。随着柴胡提取物添加剂量的增加,乳尿素氮、乳脂率、总固形物和血液中白蛋白、尿素氮、总胆固醇、高密度脂蛋白胆固醇和β-羟丁酸浓度均线性降低(P0.05),甘油三酯浓度线性增加(P0.01)。与对照组相比,2.5和5.0g·kg~(-1)组的血浆尿素氮浓度显著增高(P=0.05),5.0g·kg~(-1)组的总胆固醇和高密度脂蛋白胆固醇浓度显著高于对照组和0.5g·kg~(-1)组。因此,本研究建议柴胡提取物在热应激奶牛上的适宜用量为0.5g·kg~(-1),低于5.0g·kg~(-1)的剂量为安全用量。
[Abstract]:In order to study the effects of different doses of Radix bupleuri) extract on physiological indexes, production performance and blood metabolism of heat stress dairy cows, the complete randomized block design was used to study the effects of different doses of Radix bupleuriae extract on milk yield and days of lactation. 48 healthy Holstein cows of late lactation were randomly divided into 4 groups, 12 in each group, supplemented with 0.5g / kg of Bupleurum root extract in basal diet for 10 weeks. The results showed that the effects of Bupleurum chinense extract on rectal temperature, feed intake, milk yield, milk protein yield and somatic cell score were quadratic equation. Rectal temperature and somatic cell score were the lowest at 0.5 g kg 路kg ~ (-1). With the increase of additive content of Bupleurum chinense extract, milk urea nitrogen, milk fat rate, total solids and blood albumin, urea nitrogen, total cholesterol, The concentration of high density lipoprotein cholesterol and 尾 -hydroxybutyric acid decreased linearly (P 0.05), and the concentration of triglyceride increased linearly (P 0.01). Compared with the control group, the plasma urea nitrogen concentration in the 2.5 and 5.0 g / kg group was significantly higher than that in the control group (P 0.05 g 路kg -1) and the concentration of high density lipoprotein cholesterol (HDL-C) was significantly higher than that in the control group and 0.5 g kg 路kg ~ (-1) group. Therefore, the optimum dosage of Bupleurum chinense extract in heat stress dairy cattle was 0.5g / kg ~ (-1) and less than 5.0g / kg / kg ~ (-1)).
【作者单位】：安徽农业大学动物科技学院;中国农业科学院北京畜牧兽医研究所;上海光明荷斯坦牧业有限公司;北京生泰尔科技股份有限公司;
【基金】：国家重点研发计划(2016YFD0500503) 现代农业产业技术体系专项资金(CARS-37) 安徽省国际科技合作计划项目(1503062019)
【分类号】：S858.23

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