数字农科院2.0

Effects of dietary copper sources on growth, tissue copper accumulation and physiological responses of Japanese sea bass (Lateolabrax japonicus) (Cuvier, 1828) fed semipurified or practical diets

文献类型： 外文期刊

作者： Wang, Lan-mei;Wang, Jia;Xue, Min;Wu, Xiu-feng;Zheng, Yin-hua;Han, Fang;Bharadwaj, Anant S.;Xue, Min;Qin, Yu-chang

作者机构：

关键词： copper sources;growth;copper accumulation;physiological responses;Lateolabrax japonicus

期刊名称： AQUACULTURE RESEARCH

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年卷期：

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收录情况： SCI

摘要： An 8-week trial was conducted to compare the efficacy of a chelated copper (Cu) with the inorganic Cu (CuSO4), in the diet of Japanese sea bass (Lateolabrax japonicus). Six diets were prepared based on two basal diets (semi-purified or practical) at two Cu inclusion levels (0 and 4mgkg(-1) from or chelated-Cu), accordingly named as S0, SI4, SM4, P0, PI4 and PM4 respectively. Each diet was fed to quadruplicate groups of Japanese sea bass (initial weight: 65.0 +/- 0.03g) during the trial. Fish fed practical diets had higher feed intake, specific growth rate, protein efficiency rate (PER), liver Cu accumulation, liver Na+K+-ATPase and plasma alkaline phosphatase, but lower hepatosomatic index than the groups fed semi-purified diets (P<0.05). Higher PER was exhibited by fish fed chelated-Cu diets than that of fish fed CuSO4 diets (P<0.05). Although liver Cu accumulation was significantly higher in fish fed practical diets,, liver Cu content increased significantly with increasing dietary copper levels only in fish fed semipurified diets. Chelated-Cu has higher efficiency than CuSO4 when fed in practical diets. Poor growth performance of fish fed semipurified diets might induce underestimating the nutrient requirement of Japanese sea bass.

分类号： S9

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