摘要
针对宁夏奶牛隐性乳房炎流行病学进行了为期11个月的调查,结果表明:养殖园区的隐性乳房炎发病率为52.74%,规模化奶牛场平均发病率为44.13%。并将体细胞数在50万以上的乳汁进行了细菌分离鉴定,分离出了大量的细菌,得到197株细菌,动物攻毒试验结果表明,分离出的细菌均具有一定的致病力。
The epidemiology of cow subclinical mastitis was investigated for 11 month in the large-scale dairy farms and cul- ture park in Ningxia. The results showed that incidence of subclinical mastitis was 52.74% in culture park and the average incidence of that was 44.13% in large scale dairy farms. 197 strains bacteria were isolated and identified from the milk in which the somatic cell was above 500 thousands. Animal attack experiment showed that isolated bacteria had a certain pathogenicity.
出处
《宁夏农林科技》
2012年第5期115-116,134,共3页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
奶牛
乳房炎
流行病学
调查
Cows
Mastitis
Epidemiology
Investigation
