Physiological and histopathological responses of yellow catfish to high-density transportation: Implications for welfare and survival

文献类型： 外文期刊

第一作者： Wang, Zhaoding

作者： Wang, Zhaoding;Bai, Chan;Huang, Guowei;Xiong, Guangquan;Wang, Juguang;Wang, Lan;Liao, Tao;Wang, Zhaoding;Bai, Chan;Huang, Guowei;Xiong, Guangquan;Wang, Juguang;Wang, Lan;Liao, Tao;Wang, Zhaoding;Chai, Yi

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关键词： Yellow catfish; Physiology and biochemistry; Transport stress; High density; Tissue section

期刊名称：AQUACULTURE （ 影响因子：3.9； 五年影响因子：4.4 ）

ISSN： 0044-8486

年卷期： 2025 年 608 卷

页码：

收录情况： SCI

摘要： Transportation practices, especially under high-density conditions, induce significant physiological stress in yellow catfish (Pelteobagrus fulvidraco), adversely affecting their health and product quality. This study examines the effects of transportation density (defined as fish biomass (kg) to water volume (m3) ratios of 1:4, 1:8, 1:12, and 1:16) and duration (0, 3, 6, 12, 24, 48, 72 h) on oxidative stress biomarkers, immune responses, and tissue damage. In high-density groups (1:4 and 1:8), mortality occurred after 48 h and 72 h, respectively, with survival rates declining sharply. Elevated serum aspartate aminotransferase and alanine aminotransferase levels indicated liver damage, while increased blood urea nitrogen and creatinine levels revealed impaired kidney function, particularly severe in the 1:4 density group. Cortisol and glucose levels surged in high-density groups, reflecting metabolic disruption. Although antioxidant enzymes (Catalase, Superoxide dismutase) initially increased with density, they were overwhelmed in high-density groups, as evidenced by elevated malondialdehyde levels, indicating lipid peroxidation. Histopathological analysis confirmed tissue damage in high-density groups, including hepatic vacuolation, gill filament curling, and intestinal villi rupture. High-density transport significantly compromises the survival, physiological function, and tissue integrity of yellow catfish. To enhance the survival rate and welfare of yellow catfish during transportation, a comprehensive assessment was conducted based on stress indicators and tissue damage.

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