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《Fisheries Science》 2005-07
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Optimal Dietary Lipid Requirement of Yellow Catfish Pelteobagrus fulvidraco

HAN Qing, TIAN Zong-cheng, XIA Wei-fu, LUO Yu-shuang, WU Ming-liang(Department of Life Science, Hunan University of Arts and Science, Changde 415000, China)  
A feeding trail was conducted to evaluate the optimal levels of dietary fish oil/soy-oil (1∶1,w/w) for maximum weight gain and feed conversion efficiency in yellow catfish (Pelteobagrus fulvidraco)juvenile. The juveniles with average body weight of 8 g were randomly divided into 12 groups and fed six isonitrogenous and isoenergetic semi-purified diets with lipid levels of 5.21%, 7.23%, 9.27%, 11.31%, 13.33%, and 15.37% for 40 days. The results showed that there were increase in weight gain, feeds conversion efficiency and protein efficiency within the lipid levels of 5.21%~11.31%, while there were decrease in weight gain, feeds conversion efficiency and protein efficiency within the lipid levels of 11.31%~15.7%. With the increment of lipid supplementation, the fish had high hepatopancreas somatic indices (HSI) and muscular exudative losses, indicating that the optimal dietary lipid levels is 11.31% for the juveniles.
【Fund】: 湖南省科技厅重点项目(NKY00-10094);; 湖南省教育厅一般项目(03C0275).
【CateGory Index】: S963.1
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