Among the combinations above, the following 12 test combinations with good results were selected for the digestive test: 40mg, 70mg, 100mg per kg of body weight (BW)) were added at 4 different time intervals (3d, 5d, 7d and 9d), respectively.

• 在上述组合中,选择效果比较好的下列12个组合进行消化试验:在每间隔3d,5d,7d and 9d分别按每千克体重添加40mg,70mg和100mg的半胱胺。