热应激对金定鸭生产性能、生殖激素水平及免疫指标的影响  

Effect of Heat Stress on Production Performance,Reproductive Hormone Levels and Immune Indexes of Jinding Duck

作　　者：郝晓娜 李丽[1] 章琳俐[1] 朱志明[1] 缪中纬[1] 黄勤楼[1] 辛清武[1] 郑嫩珠[1] HAO Xiaona;LI Li;ZHANG Linli;ZHU Zhiming;MIAO Zhongwei;HUANG Qinlou;XIN Qingwu;ZHENG Nenzhu(Fujian Key Laboratory of Animal Genetics and Breeding,Institute of Animal Husbandry and Veterinary Medicine,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350013;College of Animal Science,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002)

机构地区：[1]福建省农业科学院畜牧兽医研究所福建省畜禽遗传育种重点实验室,福建福州350013 [2]福建农林大学动物科学学院(蜂学学院),福建福州350002

出　　处：《中国家禽》2024年第5期70-75,共6页China Poultry

基　　金：福建省自然科学基金项目(2020J01348);福建省公益专项(2021R1026005、2020R1026007)。

摘　　要：试验旨在研究热应激对金定鸭生产性能、血液生殖激素、卵巢生殖相关基因表达量及免疫指标的影响。试验选用产蛋期400日龄的金定鸭,设置对照组(常温组)、试验组(热应激)。对照组环境温度(25±2)℃,试验组环境温度(35±2)℃;测定热应激下金定鸭生产指标、血清生殖激素指标和免疫指标、卵巢生殖基因表达量。结果显示:与对照组相比,试验组产蛋率、总蛋重和平均蛋重极显著降低(P<0.01);血清促卵泡生成素(FSH)含量显著降低(P<0.05);卵巢促性腺素释放激素(GnRH)基因表达量显著降低(P<0.05),促黄体生成素(LH)基因表达量极显著降低(P<0.05);血清IgG含量极显著降低(P<0.01),肿瘤坏死因子-α(TNF-α)含量显著升高(P<0.05)。由此可见,热应激对金定鸭生产性能、生殖激素水平及免疫指标产生不利影响,其中产蛋率、总蛋重、平均蛋重、血清FSH及卵巢LH、GnRH基因表达量均显著降低,蛋鸭炎性因子水平显著增加,机体免疫力显著下降。This experiment was conducted to study the effect of heat stress on production performance,blood reproductive hormones,ovarian reproductive gene expression and immune indexes of Jinding duck.Jinding ducks of 400 days of age in laying period were selected in the experiment,the control group and experimental group were set up.The ambient temperature of the control group was(25±2)℃,the ambient temperature of the experimental group was(35±2)℃.The production indexes,serum reproductive hormone indexes,immune indexes and ovarian reproductive gene expression of Jinding ducks under heat stress were determined.The results showed as follows:compared with the control group,the laying rate,total egg weight and average egg weight of laying ducks in the experimental group were significantly decreased(P<0.01);The serum follicle stimulating hormone follicle-stimulating hormone(FSH)content of Jinding ducks in the experimental group was significantly decreased(P<0.05).The expression of gonadotropin-releasing hormone gene(GnRH)in ovary of Jinding ducks in the experimental group was significantly decreased(P<0.05),luteinising hormone gene(LH)was significantly decreased(P<0.05).Compared with the control group,the serum IgG content in the experimental group was significantly decreased(P<0.01),and the tumor necrosis factor-α(TNF-α)content was significantly increased(P<0.05).It could be seen that heat stress had an adverse effect on production performance,reproductive hormone levels and immune indexes of Jinding ducks.The egg production rate,total egg weight,average egg weight,serum FSH and ovarian LH,GnRH gene expression were significantly decreased,the levels of inflammatory factors in laying ducks were significantly increased,and the body immunity was significantly decreased.

关 键 词：金定鸭 热应激 生产性能 生殖激素 血清免疫指标 

分 类 号：S834.5[农业科学—畜牧学]