The study also implied that the dietary contents of Mn and apparent available Mn for optimal production performance should not exceed 46 mg/kg and 14.1 mg/kg, respectively.

• 锰是影响产蛋率、产蛋量和其它元素吸收率的主要因素,初步推荐基础日粮(即A组)锰或表观可利用锰的含量分别为46 mg/kg或14 mg/kg时,有利于产蛋鸡获得良好的生产性能,并能提高主要养分利用率。