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畜牧人

標題: 求助：地方品種土雞種雞蛋黃不成型！ [打印本頁]
作者: lila    時間: 2017-4-28 11:01
標題: 求助：地方品種土雞種雞蛋黃不成型！
各位老師、各位高人：種雞場（地方品種土雞），初產蛋雞一批，雞蛋放置5天左右就散黃，請問是什么原因所致？經過各方面分析雞本身沒有異常。兩年來一直使用某合資企業4%預混料，從未出過問題。近期飼養工人反應初產蛋雞、產蛋雞采食速度相對較慢，但采食量正常！




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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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