The AME and N-corrected apperant metabolisable energy(AMEn) of 80g gavage group were obvious higher than that of 60g gavage group, But there no evident difference between 100g and 80g,100g and 60g gavage groups.

• AME和AMEn值强饲80g组显著高于强饲60g组,但和强饲100g组差异不显著;