showed a trendP > 0.05
The HP3 group showed a trend of increasing relative ileum length ( P > 0.05).
The HP3 group showed a trend of increasing relative ileum length ( P > 0.05).
In terms of slaughter rate, compared with the CK group, the AMG group showed a decrease, the HP4 group showed an increase, while the HP1 and HP2 groups had no significant effect ( P > 0.05); HP3 showed a decreasing trend compared with the CK group, but had no significant difference from the AMG group ( P > 0.05); the HP4 group was significantly higher than the AMG group ( P > 0.05).