试验共使用450只肉仔鸡，分成5个处理：处理1（对照组）、处理2,3,4,5，分别在第7,6,5和4周开始使用有机镁日粮。
Four hundred and fifty day-old broilers were randomly allotted to five treatments . The five treatments were control , and group 2 , 3 , 4 , and 5 ( organic Mg diet was fed from 7th , 6th , 5th and 4th week respectively ) .
共肉