不同生殖激素对奶牛同期发情效果的研究  

Research on Different Reproduction Hormone to Estrous Synchronization of Holstein

作　　者：胡雄贵[1] 邓缘[1] 燕海峰[1] 肖定福[2] 李剑波[1] 刘海林[1] 

机构地区：[1]湖南省畜牧兽医研究所,长沙410131 [2]湖南农业大学,长沙410128

出　　处：《中国奶牛》2009年第10期25-27,共3页China Dairy Cattle

基　　金：国家级项目(财农[2007]217);湖南省科技攻关项目(2007WK3028)

摘　　要：为了研究不同激素对奶牛同期发情效果的影响,本实验选择了80头荷斯坦牛,根据直肠检查结果将牛群随机分为对照组和3个实验组,实验组分别采用定时输精法(GnRH)、PMSG法、PG法进行同期发情处理。结果表明:应用定时输精法、PG法和PMSG法的发情率分别为0%、75%和75%,妊娠率分别为60%、50%和55%。从不同繁殖状态分析,青年牛应用PMSG法的同期发情效果最好;从卵巢发育状态分析,以处于卵泡期的牛同期发情效果最好。80 holstein were chose to study the effect of different hormone to estrous synchronization. According to the result of rectal examination, these cows were divided into one control group and three test groups which were treated by timed artificial insemination（GnRH）, PG and PMSG, respectively. The result showed that in the three test groups, timed artificial insemination（GnRH）, PG and PMSG, estrus rate were 0%, 75% and 75% group respectively, while the pregnancy rate were correspond to 60%, 50% and 55%. The heifers have a better result of Estrous synchronization with PMSG than postpartum cows. During ovarian follicle period, Cows have a best result of Estrous synchronization than corepus luteum period, rest period and ovaries trophy.

关 键 词：同期发情 定时输精 荷斯坦牛 

分 类 号：S823.3[农业科学—畜牧学]