畜牧兽医学报2018，Vol.49Issue(3)：620-628,9.DOI:10.11843/j.issn.0366-6964.2018.03.020
中药复方制剂对热应激肉牛生产性能及生理生化指标的影响
Effects of Chinese Medicine Prescriptions on Production Performance,Physiological and Biochemical Indexes of Beef Cattle under Heat Stress
摘要
Abstract
The study aimed to investigate the effects of Chinese medicine prescriptions on production performance,physiological and biochemical indexes of beef cattle under heat stress.Eighteen healthy uncastrated beef cattle with 22 month old and initial body weight of (433.41±15.10) kg were randomly allotted into 3 groups.One group was the control group and the other two groups were the treatment groups.There were 6 cattle in each group.The experiment was designed by single factor random arrangement.The cattle in the control group were fed the basal diet.And the cattle in the two treatment groups were fed the basal diets with Chinese medicine prescription Ⅰ (strengthening the spleen group,SS) and prescription Ⅱ (clearing heat group,CH) supplied with 100 g per day per cattle,respectively.All cattle were fed under high temperature and humidity in summer of south in China.The duration of preliminary experiment was 10 days and the duration of the formal experiment was 60 days.Feed intake was recorded everyday,the body temperature and respiratory rate were determined at 1,20,40 and 60 d,and serum samples were collected for detecting biochemical indexes at the end of the experiment.The results showed that:1) The body temperature of individuals in SS group significantly decreased on day 40 and 60 (P＜0.05),and body temperature of individuals in CH group significantly decreased on day 20 and 60 (P＜0.05) compared with control group.The respiratory rate of individuals in SS and CH groups significantly reduced on day 20 and 40 compared with control group (P＜0.05).2) On day 60,the content of serum total protein,albumin,triglyceride of individuals in SS group significantly increased,but their total cholesterol levels significantly decreased compared with control group (P＜0.05).Moreover,serum triglyceride levels of individuals in the CH group were lower but their total cholesterol levels were higher than those in the SS group (P＜0.05).3) Compared with control group,the levels of serum insulin and adiponectin of individuals in the SS group significantly increased (P＜0.05),but serum insulin and growth hormone levels of individuals in the CH group significantly decreased (P＜0.05),and the thyroid hormone (T3 and T4) levels of individuals in CH group significantly increased(P＜0.05).The levels of serum insulin,growth hormone and adiponectin of individuals in the CH group were lower but the thyroid hormone (T3 and T4) were higher than those in the SS group (P＜0.05).4) The average daily feed intake (ADFI) and the average daily gain (ADG) of beef cattle in the SS group significantly decreased (P＜0.05),but the F ∶ G ratio significantly increased compared with control group (P＜0.05).The present results suggested that dietary supplemented with two Chinese medicine prescriptions could alleviate the heat stress response of beef cattle,and dietary supplemented with the SS promoted the synthesis and metabolism of fat,but had a negative impact on the beef cattle production performance.关键词
中药复方制剂/肉牛/热应激/生理生化指标/生产性能Key words
Chinese medicine prescription/beef cattle/heat stress/physiological and biochemical index/production performance分类
农业科技引用本文复制引用
张新雨,刘博,罗军荣,徐洋,尚含乐,杨食堂,宋小珍..中药复方制剂对热应激肉牛生产性能及生理生化指标的影响[J].畜牧兽医学报,2018,49(3):620-628,9.基金项目
国家自然科学基金(31660672) （31660672）
现代农业产业技术体系资助项目(CARS-38) （CARS-38）
江西省教育厅科学技术重点项目(GJJ150376) （GJJ150376）
