西荷杂交犊牛生长性能及耐热性的研究

发布时间：2018-02-23 11:36

本文关键词： 西荷杂交牛生长性能热应激血清生化指标 HSP　出处：《畜牧与兽医》2017年03期 　论文类型：期刊论文

【摘要】：本试验旨在研究西门塔尔牛与荷斯坦牛的杂交后代犊牛的生长性能和耐热性。选择15头刚出生的西荷杂交牛作为试验组,15头同期出生荷斯坦牛为对照组,分别测定了0、3、6月龄的体重体尺指标,并在热应激状态下测定了血液生化指标和HSP70的含量。结果表明:3月龄时,试验组的体高显著高于对照组(P0.05),尤其在体重和胸围方面试验组优于对照组,差异极显著(P0.01)。6月龄时,试验组的胸围、体重均优于对照组,差异显著(P0.05)。在热应激期间,试验组的SOD和HSP70含量比对照组分别高出18.3%和26.7%,差异显著(P0.05);MDA、GSH-SP、T3、T4、COR等指标组间差异不显著(P0.05)。结论:西门塔尔牛与荷斯坦牛的杂交牛在犊牛期生长发育效果优于同龄荷斯坦犊牛,而且在热应激状态下表现出良好的耐热性。
[Abstract]:The aim of this study was to study the growth performance and heat resistance of the offspring of Simmental and Holstein calves. Fifteen newly born Holstein calves were selected as the control group. The body weight and blood biochemical indexes and the content of HSP70 were measured at the age of 0 ~ 3 ~ 6 months under heat stress, respectively. The results showed that at the age of 30 ~ 3 months, the blood biochemical index and the content of HSP70 were measured at the age of 30 ~ 3 months. The body height of the experimental group was significantly higher than that of the control group (P 0.05), especially in the body weight and chest circumference of the test group. The difference was significant at the age of P0.01 ~ 6 months, the chest circumference and body weight of the test group were all better than that of the control group, and the difference was significant (P 0.05) during heat stress. The contents of SOD and HSP70 in the experimental group were 18.3% and 26.7 higher than those in the control group, respectively, and the difference was significant. There was no significant difference between the two groups. Conclusion: the growth and development effect of Simmental and Holstein crossbred cattle is better than that of the Holstein calves of the same age. And showed good heat resistance under heat stress.
【作者单位】：南京农业大学动物科技学院;南京卫岗乳业集团有限公司;
【基金】：十二五国家科技计划课题(2012BAD12B10)
【分类号】：S823

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