Page 63 - 《渔业研究》2026年第1期

60 渔 业 研 究 第 48 卷

Effects of partial replacement of fish meal with cricket meal on growth
performance, digestive enzyme activities, and liver antioxidant
capacity in juvenile Leuciscus waleckii

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SUN Xiaohui ，LIU Yajuan ，ZHU Wenwen ，ZHAO Daoquan ，HUANG Yong 4*
(1. Luoyang City Agricultural Technology Extension Service Center, Luoyang 471000, China;
2. Food and Drug College, Luoyang Polytechnic, Luoyang 471004, China;
3. Field Scientific Observation and Research Station of Yiluo River Aquatic Life in the Yellow River Basin,
Henan Provincial Research Institute of Aquatic science, Sanmenxia 472203, China;
4. College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, China)

Abstract: [Objective] The search for insect protein sources as alternatives to fish meal is a current hot topic in
aquaculture nutrition research. This study aims to investigate the effects of dietary cricket meal supplementation
on the growth performance, body composition, digestive enzyme activities, and liver antioxidant capacity in ju-
venile Leuciscus waleckii. [Methods] A total of 450 juvenile L. waleckii with an average weight of approxim-
ately (16.27±0.05) g were subjected to 56 days feeding trial. Experimental diets included cricket (Gryllulus)
meal replacing fish meal at levels of 0% (P0 control group), 5% (P5 group), 10% (P10 group), 15% (P15 group),
and 20% (P20 group). [Results] 1) At the end of the feeding experiment, compared with the control P0 group,
no significant differences were observed in final body weight (FBW), weight gain rate (WGR), specific growth
rate (SGR) and feed conversion ratio (FCR) among all the experimental groups; however, the viscerosomatic in-
dex (VSI) in the P20 group significantly decreased (P<0.05). 2) There were no significant differences in the
whole-body composition (moisture, crude protein, crude lipid, and crude ash) among all the groups. 3) Com-
pared with the control P0 group, the activities of lipase and pepsin in all experimental groups were significantly
increased (P<0.05); the activity of α-amylase in the P20 group was significantly higher than that in the control
P0 group and the other experimental groups (P<0.05). 4）The malondialdehyde (MDA) content in the liver of
the P15 group was significantly lower than that in the P20 group (P<0.05); the catalase (CAT) activity in the
liver of the P10, P15, and P20 groups was significantly higher than that in the control group P0 (P<0.05).
[Conclusion] Under the conditions of the study, the replacement of fish meal with an appropriate proportion of
cricket meal does not negatively affect growth performance of juvenile L. waleckii, but enhances intestinal di-
gestive enzyme activities and liver antioxidant capacity, with the 15% replacement level showing optimal ef-
fects. These findings provide data support for the development and application of fish meal-based diets and low-
fish meal formulated feeds for juvenile L. waleckii.
Key words: cricket (Gryllulus) meal; Leuciscus waleckii; growth performance; digestive enzyme activity; antio-
xidant capacity