贵阳市奶牛小区奶牛繁殖性能调查

Investigation on the Reproductive Performance of Cows in Guiyang Breed Plot

本文就贵阳市具有典型代表性的某奶牛小区奶牛的繁殖性能进行调查,调查结果表明:该奶牛养殖小区2007～2009年的平均年受胎率为83.0%,产犊间隔时间为427.00±3.36d,产后子宫复旧时间为39.94±1.72d;产后瘫痪、胎衣不下、子宫内膜炎及死胎的发病率均有逐年下降的趋势,但乳房炎和肢蹄病的发病率却呈上升的趋势。该奶牛养殖小区的胎衣不下、乳房炎、子宫内膜炎及肢蹄病的发病率仍较高,严重影响了该小区的经济效益。

This paper presents the results of investigation on the reproductive performance of the Guiyang cow breeding area.It may be summarized as follows： the cow breeding area＇s annual conception rate is 83.0%,calving interval is 427.00±3.36d,postpartum womb backswing time is 39.94±1.72d in 2007~2009;the morbidity of be paralysed after the childbirth,afterbirth are unable to dress,endometritis and the stillborn foetus have the trend going down year by year,but mastitis and limb hoof disease morbidity assume the trend rising,and the morbidity of afterbirth are unable to dress,mastitis,the womb inner film is scorching and limb hoof disease are higher,which affected the economic profit of the cowbreeding area seriously.