文献类型： 外文期刊
作者： Tian, Juan 1 ; Xiao, Wenfu 1 ; Gao, Weihua 2 ; Zhang, Jianmin 1 ; Xu, Liangzi 3 ; Li, Mingzhu 3 ; Liang, Hongwei 1 ; Xie, Ningning 1 ; Dong, Lixue 1 ; Li, Jie 4 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China
2.Yangtze Univ, Coll Anim Sci, Jingzhou 434024, Peoples R China
3.Ludong Univ, Coll Agr, Yantai, Peoples R China
4.Hubei Fisheries Sci Res Inst, Wuhan 430071, Peoples R China
期刊名称：AQUACULTURE NUTRITION （ 影响因子：3.5； 五年影响因子：3.6 ）
ISSN： 1353-5773
年卷期： 2023 年 2023 卷
页码：
收录情况： SCI
摘要： To investigate the dietary cholesterol requirements of large red swamp crayfish (Procambarus clarkii), crayfish (initial body weight: 13.49 +/- 0.22 g) were hand-fed six diets containing 2.47 (C0), 4.27 (C1), 6.80 (C2), 8.77 (C3), 11.74 (C4), and 14.24 (C5) g/kg cholesterol. After 8 weeks of feeding, the maximum weight gain rate and specific growth rate occurred in group C4. The lowest feed conversion ratio was observed in group C3. Total flesh percentage increased significantly by 15.33% in group C2 compared to group C0. The increase in dietary cholesterol resulted in significant quadratic trends in concentrations of crude protein and lipid in muscle and whole body; cholesterol and free fatty acid in hemolymph, hepatopancreas, and muscle; activities of lipase and amylase in hepatopancreas and intestine; and total antioxidant capacity and catalase activity in hepatopancreas. Group C3 experienced a noteworthy increase in hemolymph glucose and total protein content compared to group C0. Additionally, malondialdehyde content and superoxide dismutase activity in hepatopancreas displayed significant linear and quadratic trends. The optimal dietary cholesterol level for large P. clarkii is between 7.42 and 10.93 g/kg, as revealed by the quadratic regression analysis.
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