1, 90 piglets with initial BW of 8.1 kg were fed one of five diets in a randomized block design for 28d.

• 试验一；采用单因子随机区组设计；选用平均断奶体重8.；1kg的三元杂交(杜×大×长)仔猪90头；随机分为5个处理。