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qian xi jia qin mian yi shi bai de yuan yin
Author(s): 
Pages: 35-36
Year: Issue:  12
Journal: Henan Journal of Animal Husbandry and Veterinary Medicine

Keyword:  GetLinkList(KeywordFilter('免疫失败:6027疫苗免疫:3631严重影响:3170免疫程序:3154免疫效果:2984家禽:2271重要手段:2072新城疫:2042生产厂家:1998三个方面:1989')'kw''CJFQ');
Abstract: <正>在规模化养禽生产过程中,免疫仍然是控制传染病特别是病毒性传染病的最重要手段之一。但实际生产中免疫失败的现象却屡有发生,严重影响养鸡业的经济效益和发展。究其原因,主要有以下四方面:1疫苗选择和免疫程序不合理疫苗的选择包含三个方面:即生产厂家的选择、服务
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