Impacts of live and artificial feed on histology, biochemical indicators, gene expression, and bacterial resistance in mandarin fish (Siniperca chuatsi)

被引：0

作者：

Che, Shunli ^{[1
]}

Chen, Jiawei ^{[1
]}

Zhang, Hai ^{[1
]}

Xu, Weizhen ^{[1
]}

Li, Yanwei ^{[1
]}

Dan, Xueming ^{[1
]}

Mo, Zequan ^{[1
]}

机构：

[1] South China Agr Univ, Univ Joint Lab Guangdong Prov, Guangdong Lab Lingnan Modern Agr, Coll Marine Sci,Hong Kong & Macao Reg Marine Biore, Guangzhou, Peoples R China

来源：

FISH & SHELLFISH IMMUNOLOGY | 2025年 / 158卷

关键词：

Growth performance; Glucose regulation; Lipid metabolism; Inflammation; Antioxidant capacity; DIETARY CARBOHYDRATE LEVEL; GROWTH-PERFORMANCE; FATTY LIVER; METABOLISM; RESPONSES; STRESS;

D O I：

10.1016/j.fsi.2025.110169

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The mandarin fish (Siniperca chuatsi) is a significant freshwater carnivorous species in Chinese aquaculture industry, and its farming scale is continuously expanding. The use of feed in aquaculture has become an increasingly common practice. However, the impacts of substituting artificial feed for live bait on fish's biochemical and immune responses are poorly understood. In this study, two hundred forty mandarin fish (weight: 5.60 +/- 0.41 g) were divided into two groups and fed live bait or artificial feed (LB and AF groups) over a 63-day aquaculture experiment. We compared the differences between the two groups in terms of histology, biochemical indicators, gene expression, and bacterial resistance. The results showed that artificial feed promoted enhanced growth, evidenced by higher weight (p < 0.05). The AF group exhibited higher liver and intestinal somatic indices (p < 0.05), and histological examination revealed denser cytoplasmic content in liver cells, less fragmentation of renal tubular epithelial cells, and less detachment of intestinal epithelial cells in the AF group. Regarding biochemical indicators and gene expression, the AF group showed better performance in glucose regulation and lipid metabolism. The AF group maintained glucose balance (p < 0.05) and effectively regulated cholesterol transport (p < 0.05), promoting lipolysis (p <0.05) while inhibiting lipogenesis (p < 0.05). In contrast, live bait consumption resulted in reduced lipolysis (p < 0.05), increased lipogenesis (p < 0.05), impaired endoplasmic reticulum function (p < 0.05), heightened inflammation (p < 0.05), and diminished antioxidant capacity (p < 0.05). Additionally, the LB group exhibited lower survival rates and lysozyme levels during bacterial challenges. Overall, artificial feed was more beneficial for the growth, regulate physiology and enhance disease resistance of S. chuatsi, highlighting its potential to improve fish health and increase aquaculture yield.

引用

页数：10

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