Replacement of frozen fish meat based diet with artificial diets in rearing of coral trout Plectropomus leopardus (Lacepede, 1802) fingerlings
文献类型: 外文期刊
作者: Ma, Zhenhua 1 ; Zhang, Nan 2 ; Guo, Huayang 2 ; Zheng, Panlong 2 ; Zhang, Dianchang 2 ;
作者机构: 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
2.Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Guangdong, Peoples R China
关键词: Coral trout;FCR;Growth;Plectropomus leopardus;RNA/DNA ratio;Survival fish
期刊名称:INDIAN JOURNAL OF FISHERIES ( 影响因子:0.5; 五年影响因子:0.592 )
ISSN:
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收录情况: SCI
摘要: This study compared the efficacy of four diets in rearing of coral trout Plectropomus leopardus during the nursery phase. Details of the experimental diets used in the study are: Diet 1 - prepared with a mixture of golden pompano meat and shrimp meat (2:1, w: w); Diet 2 - prepared with golden pompano meat, shrimp meat, and fish meal (2:1:3, w:w:w); Diet 3 - a commercial pellet with 46% protein (Hairui (R), P.R. China) and Diet 4: a commercial pellet with 53% protein (Huacheng (R), P. R. China). Fish fed Diet 2 showed the lowest survival rate. The specific growth rate (SGR) of fish fed with Diet 3 and Diet 4 were significantly higher than those fed with Diet 1 and Diet 2 (p < 0.05). Food conversion rates (FCR) of fish fed with Diet 3 (1.5 +/- 0.4) and Diet 4 (2.0 +/- 0.3) were significantly lower than those fed with Diet 1 (5.5 +/- 0.6) and Diet 2 (7.7 +/- 1.7, p < 0.05). Results from the present study demonstrated that it is feasible to feed coral trout fingerlings with commercial pellets during nursery phase. The fish meat based diet can be replaced with Diet 3 or Diet 4, and among these the most economic diet was Diet 3 with the production cost rate of CN (sic) 0.02 per g biomass.
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