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畜牧人

標題: 近年豬瘟的流行特點以及免疫注意事項 [打印本頁]
作者: li-liang2008    時間: 2007-6-26 11:16
標題: 近年豬瘟的流行特點以及免疫注意事項
豬瘟是豬病防治之根本，豬瘟流行以來經歷了典型——非典型化——典型化的階段，與豬瘟的免疫混亂是分不開的。我國的兔化弱毒疫苗證明是十分有效的，關鍵是如何免疫。



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亚洲日韩精品无码专区网站_亚洲日本一区二区_亚洲Av无码专区国产乱码DVD_亚洲精品永久在线观看 
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