首页 | 本学科首页   官方微博 | 高级检索  
     


Control of bovine leukosis virus in a dairy herd by a change in dehorning.
Authors:R F DiGiacomo   S G Hopkins   R L Darlington     J F Evermann
Affiliation:Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle 98195.
Abstract:Following the demonstration that bovine leukosis virus was transmitted in calves by gouge dehorning, electrical dehorning at a younger age was implemented in a commercial Holstein herd. Subsequently, annual testing of the herd revealed a decline in the prevalence of bovine leukosis virus antibodies as older cattle dehorned by the former method were replaced by younger cattle dehorned by the latter method.
Keywords:
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号