Dietary Mn levels required to obtain satisfactory eggshell strength, heart Mn content, and MnSOD activity in heart mitochondria based upon the above best fitted models were 45, 100, and 105mg/kg, respectively.

• 以上述最优拟合数学模型计算获得理想蛋壳强度、心肌Mn含量和心肌细胞线粒体MnSOD活性所需的饲粮Mn水平分别为45、100和105mg/kg。