外源激素处理对奶牛同期发情的调节效果  

Effect of Exotic Hormone Treatments on Cow's Estrus Synchronization

作　　者：刘立山 郎侠[1] 王彩莲[1] 周瑞[2] 宋淑珍[1] 宫旭胤[1] 王斐[1] 吴建平[3] LIU Lishan;LANG Xia;WANG Cailian;ZHOU Rui;SONG Shuzhen;GONG Xuyin;WANG Fei;WU Jianping(Pasture and Green Agricultural Institute of Gansu Academy of Agricultural Sciences Animal Husbandry,Lanzhou Gansu 730070,China;;College of Animal Science and Technology,Gansu Agricultural University,Lanzhou Gansu 730070,China;Gansu Academy of Agricultural Science,Lanzhou Gansu 730070,China)

机构地区：[1]甘肃省农业科学院畜草与绿色农业研究所,甘肃兰州730070 [2]甘肃农业大学动物科学技术学院,甘肃兰州730070 [3]甘肃省农业科学院,甘肃兰州730070

出　　处：《甘肃农业科技》2018年第12期76-79,共4页Gansu Agricultural Science and Technology

基　　金：国家自然基金项目"天然草原牧草代谢能极端变化时绵羊(Ariesovis)脂肪代谢与沉积的胁迫性响应机理研究(31460592)";农业部公益性行业科研专项(201503134);农业部绒毛用羊产业技术体系(CRAS-39-18);动物遗传育种与草食畜生产体系(2017GAAS30)资助

摘　　要：联合使用PGF2α和GnRH对荷斯坦奶牛进行不同的同期发情定时输精程序处理,结果表明:4次PGF2α、2次GnRH法同期发情定时输精程序处理后,奶牛子宫黏液评分和直肠检测评分分别较试验前提高了0.55分(P <0.05)和0.45分(P <0.05),2次PGF2α、4次GnRH法同期发情定时输精程序处理后,奶牛子宫黏液评分和直肠检测评分分别较试验前分别提高了0.30分(P<0.05)和0.45分(P<0.05)。4次PGF2α、2次GnRH法同期发情定时输精程序处理和2次PGF2α、4次GnRH法同期发情定时输精程序处理后的奶牛同期发情率分别为80%、90%,第1个情期受胎率分别为65%、70%,比对照自然发情牛分别高25、30百分点。说明利用外源激素PGF2α和GnRH处理能促进奶牛卵巢和子宫复旧,达到同期发情的效果,并提高奶牛受胎率。The experiment use different Estrus synchronization technology ways on cows selected 40 cows of postpartum 90 days or more,not estrus and infertility,were randomLy divided into test groupⅠ,Ⅱ(n=20),in addition,selected 20 cows of natural estrous served as control group.Use program of estrus synchronization and accurate timing of insemination for test groupⅠand Ⅱ.The results showed that cervical mucus score and the rectum test score were respectively increased by 0.55(P<0.05),0.45(P<0.05)before and after the test group Ⅰand respectively increased by 0.30(P<0.05),0.45(P<0.05)before and after the test group Ⅱ.The rate of estrus synchronization in the test groupⅠand Ⅱ were 80%,90%,respectively.Pregnancy rate in the1st estrus were 65%,70%respectively,and they were increased by 25,30 percentage point than that of the control,respectively.The estrus synchronization and accurate timing of insemination could promote the ovary and uterine involution,to achieve the effect of estrus synchronization,improve the pregnancy rate of dairy cow.

关 键 词：奶牛 激素 PGF2Α GNRH 同期发情 定时输精 受胎率 

分 类 号：S663[农业科学—果树学]