Effects of Feeding Frequency on Growth Characteristics,Digestive Enzymes Activities and Muscle Nutrient Composition of Juvenile Pseudobagrus ussuriensis
CHEN Junping
WU Huihui
SHEN Fangfang
ZHANG Jiaxin
YU Ruomeng
FU Yongjie
HU Jibang
ZHAO Daoquan
XIE Guoqiang
SUN Wenxi
Abstract：The effects of feeding frequency[1(F1),2(F2),3(F3)and 4(F4)times per day]on growth characteristics,intestinal digestive enzyme(lipase,α-amylase,trypsin)activity,liver aminotransferase(aspartate aminotransferase,alanine aminotransferase)activity and muscle nutrient composition of juvenile Pseudobagrus ussuriensis were studied,so as to determine the optimal feeding frequency and improve the feed utilization and nutritional quality of juvenile Pseudobagrus ussuriensis.The results showed that the final body weight,specific growth rate of body weight,relative increase rate of body weight,daily increase of body weight and specific growth rate of body length of Pseudobagrus ussuriensis of F2 group were significantly higher than those of F1 and F3 groups.The activity of intestinal lipase of F1 group was significantly higher than that of other groups.The intestinal trypsin activity of F2 group was the highest,and significantly higher than that of F3 and F4 groups.The feeding frequency had no significant influence on the activity of aspartate aminotransferase in liver tissue,and the activity of alanine aminotransferase of F1 group was significantly higher than that of other experimental groups.The crude protein contents of F2 and F4 groups were significantly higher than those of F1 and F3 groups.The crude lipid content of F4 group was the lowest,which was significantly lower than that of other experimental groups.There was significant difference in total amino acid content among different groups,the order was F1＞F3＞F2＞F4.In conclusion,it is suggested that the feeding frequency should be 2 times per day,which is more conducive to the growth of Pseudobagrus ussuriensis.
Keywords：Pseudobagrus ussuriensisFeeding frequencyGrowth characteristicDigestive enzyme activityMuscle nutrient composition
Publication Date：2025-03-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 139-146 )