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畜牧人

標題: 傳播疾病的主要途徑 [打印本頁]
作者: 陽光畜牧    時間: 2015-9-25 14:23
標題: 傳播疾病的主要途徑
類別權重
引種95%
其他動物1-2%
豬車運輸1%
空氣傳播1%
飼料物質1%
設施設備1%
【陽光畜牧商城】




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