金银花提取物对热应激肉牛血清激素及抗氧化指标的影响

发布时间：2018-04-11 22:11

本文选题：金银花提取物 + 高温　；参考：《动物营养学报》2016年03期

【摘要】：本试验旨在研究在夏季高温条件下添加金银花提取物对热应激肉牛血清激素及抗氧化指标的影响。选择体重(360±20)kg的健康锦江黄牛20头分为4组,分别在精料中添加0(对照)、0.2%、0.4%和0.6%金银花提取物,每组5个重复,每个重复1头。预试期10 d,正试期60 d。结果显示:与对照组比较,1)在40 d,0.2%和0.6%组试验牛的体温显著低于对照组(P0.05);金银花提取物对肉牛日增重无显著影响(P0.05)。2)试验组肉牛的血清三碘甲状腺原氨酸(T3)、甲状腺素(T4)含量升高,皮质醇(COR)含量下降。3)试验组肉牛血清总抗氧化能力(T-AOC)、谷胱甘肽过氧化物酶(GSH-Px)和超氧化物歧化酶(SOD)活性均提高,丙二醛(MDA)含量降低。结果提示,金银花提取物可改善肉牛抗氧化性能,缓解肉牛热应激反应,但对增重没有显著影响;综合各项指标认为精料中添加0.2%较为适宜。
[Abstract]:The purpose of this experiment was to study the effect of honeysuckle extract on serum hormone and antioxidant index of heat stress beef cattle under high temperature in summer.Twenty healthy Jinjiang yellow cattle with body weight of 360 卤20)kg were divided into 4 groups and added 0 (0. 4% and 0. 6% Flos Lonicerae extract respectively) in the concentrate, 5 replicates in each group, 1 in each group.The pre-test period was 10 days and the current test period was 60 days.The results showed that: compared with the control group, the body temperature of the test cattle was significantly lower than that of the control group at 40 d, 0.2% and 0.6%, while the extract of honeysuckle had no significant effect on the daily gain of beef cattle (P0.05. 2) the serum triiodothyronine triiodothyronine (T3) and thyroxine T4 (T4) contents of the beef cattle in the experimental group were higher than those in the control group.The activity of T-AOCX, glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) were all increased, and the content of malondialdehyde (MDA) was decreased in the test group.The results showed that Flos Lonicerae extract could improve the antioxidant ability of beef cattle and alleviate the heat stress reaction of beef cattle, but had no significant effect on weight gain.
【作者单位】：江西农业大学江西省动物营养重点实验室;江西高安裕丰农牧有限公司;
【基金】：国家自然科学基金项目(31201823) 现代农业产业技术体系资助项目(CARS-38)
【分类号】：S823.5

【参考文献】