The result showed : apparent metabolizability of CP and ME were inclined to improve in the treatment groups in corn-soybean meal based diets(P>0. 05).

• 结果表明:纯豆粕型日粮中,蛋白质和能量表观代谢率各组间差异不显著,但处理组比对照组都有改善的趋势(P>0．05),但在统计意义上,不能计算其潜在营养价值。