four-week
3.The results:(1)Compared with the control group,there was a significant difference(P<0.05) among the thymus weight of experiment supplemented 0.8% Gln of one and four-week age,that of experiment supplemented 0.4% Gln of two and four-week age and the weight of bursa of Fabricius of experiment supplemented 0.4% Gln of one,two and four-week age.


