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畜牧人

標題: 畜牧獸醫 [打印本頁]
作者: 加勒比海盜    時間: 2008-8-28 09:18
標題: 畜牧獸醫
內容介紹：本課件詳介紹了豬群咬尾產生的原因及防治。 恐懼 Fear 疼痛 Pain 不舒適（不愉快）discomfort(unhappy) 興奮過度 Hyperactive 水和飼料 Water and feed 環境的改變 Environmental change 通風 Ventilation 豬群重組 Regrouping 疾病 Diseases 糞便管理條件差 Poor manure management 其他應激 Other stresses

下載地址：畜牧獸醫

數據來源：畜牧人文獻數據 上傳資料




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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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