Effect of Stocking Density on Growth, Serum Biochemical Parameters, Digestive Enzymes Activity and Antioxidant Status of Largemouth Bass, Micropterus salmoides
文献类型： 外文期刊
作者： Wang, Yuyu 1 ; Xu, Gangchun 1 ; Nie, Zhijuan 1 ; Li, Quanjie 1 ; Shao, Nailin 1 ; Xu, Pao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab Freshwater Fisheries & Germplasm Resource, Minist Agr, Freshwater Fisheries Res Ctr, Wuxi 214081, Jiangsu, Peoples R China
关键词： Largemouth bass (Micropterus salmoides); Stocking densities; Growth; Digestive enzyme activity; Antioxidant status
期刊名称：PAKISTAN JOURNAL OF ZOOLOGY （ 影响因子：0.831； 五年影响因子：0.768 ）
ISSN： 0030-9923
年卷期： 2019 年 51 卷 4 期
页码：
收录情况： SCI
摘要： A 150 day feeding trial was performed to investigate the effect of stocking densities on growth performance, serum biochemical parameters, digestive enzymes activity and antioxidant status of largemouth bass (Micropterus salmoides) reared in an in-pond raceway system (IPRS). Fish (initial average body weight: 35.68 +/- 2.12g) were randomly allotted to in-pond raceways (26.2mx5mx2.5m) stocked at two stocking densities (68 and 114 fish/m(3), respectively). Fish were fed twice daily (08: 00 and 17: 00), and the daily ration feed was 4% of the body weight. No significant differences were observed in growth, digestive enzyme activity and antioxidant status between fish reared at two stocking densities (P>0.05). Alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), superoxide dismutase (SOD), cortisol and lysozyme in serum showed no significant differences between the two stocking groups (P> 0.05). Fish reared at high stocking density had significant lower total protein (TP), cholesterol (TC), triglyceride (TG) and glucose (Glu) content in serum compared with those reared at low density on day 90 and 120 (P< 0.05). In conclusion, the present results indicated that the largemouth bass (36-308 g) could be reared at high stocking density without depressed growth and chronic stress in commercial-scale in-pond raceway systems under this experimental conditions.
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