热应激对肉牛血清离子、酶活性、抗氧化及免疫指标的影响  

Effect of Heat Stress on Serum Ionic Concentration,Enzymatic Activity,Antioxidant and Immune Index in Beef Cattle

作　　者：王玲[1] 罗宗刚[1] 蔡明成[1] 伏彭辉[1] 周沛[1] 左福元[1] 

机构地区：[1]西南大学荣昌校区动物科学系,重庆荣昌402460

出　　处：《西南师范大学学报（自然科学版）》2017年第12期38-42,共5页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：重庆高校创新团队建设计划项目;西南大学博士基金项目(2010BSr01);西南大学荣昌校区青年基金项目

摘　　要：为研究热应激对肉牛血清离子、酶类、抗氧化及免疫指标的影响,选择了30头川南山地黄牛杂交牛,分别在春季和夏季采集外周血进行血清生化指标分析.结果表明:重庆地区夏季肉牛舍的温湿指数极显著高于春季(P<0.01),肉牛在夏季遭受着较严重的热应激;在热应激状态下,肉牛血清中的Na^+,Cl^-,K^+浓度显著低于非热应激(P<0.05),谷丙转氨酶、乳酸脱氢酶、谷草转氨酶、肌酸激酶活性显著或极显著升高(P<0.05,P<0.01),肉牛在热应激时血清中的T3浓度及谷胱甘肽过氧化物酶活性显著降低(P<0.05),总抗氧化能力、超氧化物歧化酶活性及丙二醛浓度发生了极显著变化(P<0.01);免疫球蛋白A和甘油三酯的浓度显著升高(P<0.05),低密度脂蛋白、葡萄糖浓度在两种状态间差异有统计学意义(P<0.01);热应激对肉牛血清中的Ca2+,碱性磷酸酶,甲状腺素,总蛋白,白蛋白,球蛋白,免疫球蛋白G,免疫球蛋白M,高密度脂蛋白,尿素氮,总胆固醇的浓度并无显著影响(P>0.05).The objective of this study has been conducted to evaluate the effect of heat stress on serum biochemical parameters in beef cattle.The blood samples have been collected from thirty crossbred cattle in spring and summer,and the serum has been collected for biochemical analysis.The results show that THI in summer is significant higher than in spring（P〈0.05） and beef cattle suffers from severe heat stress in summer.The serum Na＋,Cl- and K＋ concentration are lower in heat stress condition（P〈0.05）.Activity of alanine aminotransferase,aspartate aminotransferase,lactate dehydrogenase and creatine kinase are higher in summer compared to in spring（P〈0.05）.T3,T-AOC,SOD,GSH-Pxconcentration are significantly decreased in heat stress condition（P〈0.05）.MDA,IgA,low density lipoprotein,triglyceride,glucose concentration significantly changed（P〈0.05）between heat stress and normal condition.However,there is no significant difference in alkaline phosphatase activity,Ca2＋,T4,total protein,albumin,globulin,IgG,Ig M,high density lipoprotein,urea nitrogen and total cholesterol concentration between summer and spring（P〉0.05）.

关 键 词：热应激 肉牛 血清 THI 

分 类 号：S813[农业科学—畜牧学]