孕酮、雌二醇对奶牛离体真胃平滑肌收缩的影响  

Effects of progesterone and estradiol on abomasums smooth muscle contraction in vitro

作　　者：刘海霞[1] 刘俊栋[1] 赵佳[2] 邵春艳[2] 刘宗平[2] 李建基[2] 

机构地区：[1]江苏畜牧兽医职业技术学院,江苏泰州225300 [2]扬州大学兽医学院,江苏扬州225009

出　　处：《中国兽医学报》2013年第8期1285-1287,共3页Chinese Journal of Veterinary Science

基　　金：教育部国内访问学者资助项目(200809001);江苏省高校"青蓝工程"中青年学术带头人资助项目(苏教师〔2010〕27号)

摘　　要：随着奶牛集约化饲养规模的扩大和产奶量的提高,奶牛真胃变位(DA)的发病率逐渐增加。研究表明,DA多发生在奶牛围产期,而围产期母牛体内雌二醇和孕酮含量改变明显。本试验进行了不同浓度的孕酮、雌二醇对离体真胃平滑肌收缩影响的研究,表明0.4~12.8μg/L的孕酮能使真胃平滑肌收缩强度显著降低(P<0.01),且呈剂量-效应关系。50.0ng/L^101.2μg/L的雌二醇能显著抑制真胃平滑肌的收缩强度(P<0.01),但不呈现剂量效应关系。With the enhancement of dairy farm scale and high milk yield, the incidence of DA in dairy cows increases gradually in recent years. The research indicated that DA often occurres in the perinatal period of cows,but the progesterone and estradiol of cows change obviously. The results indicated that progesterone with the concentration of 0.4-12.8μg/L could reduce the contraction strength,with does-effect relationship （P〈0.01）. While estradiol with the final concentration of 50.0 ng/L-101.2μg/L could reduce the contraction strength（P〈0.01）.

关 键 词：奶牛 真胃平滑肌 孕酮 雌二醇 

分 类 号：S856.4[农业科学—临床兽医学]