The bone of broiler was calcificated mainly in week 2~5, the suscepti-ble time to rickets was week 3~4.

 
  • 結果表明;肉用仔雞骨骼形成的主要時(shí)期在2~5周齡;佝僂病發(fā)生的敏感時(shí)期在3~4周齡.
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan