a numerical increasing trendP > 0.05
However, age did not affect serum ALT activity and relative liver weight of birds, although there was a numerical increasing trend of these 2 indices in the D525 group compared with other 2 groups ( P > 0.05).
However, age did not affect serum ALT activity and relative liver weight of birds, although there was a numerical increasing trend of these 2 indices in the D525 group compared with other 2 groups ( P > 0.05).