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畜牧人

標(biāo)題: 請教：青年蛋雞和老年蛋雞的區(qū)別？ [打印本頁]
作者: nutritionfriend    時間: 2011-4-28 22:10
標(biāo)題: 請教：青年蛋雞和老年蛋雞的區(qū)別？
青年蛋雞和老年蛋雞的區(qū)別：
1.青年蛋雞羽毛豐滿，老年蛋雞由于長期產(chǎn)蛋導(dǎo)致AA缺乏而脫毛。
2.青年蛋雞蛋殼顏色較深，老年蛋雞蛋殼顏色變淺。




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