Responces of Hatchery-Cultured Mud Crab (Scylla paramamosain) Instar Fed Natural Prey and an Artifical Feed
文献类型： 外文期刊
作者： Gong, Yang-yang 1 ; Lu, Jian-xue 1 ; Wang, Xiao-shan 1 ; Huang, Yan-qing 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab East China Sea & Ocean Fishery Resources, Minist Agr, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China
关键词： mud crab; artificial feed; growth; amino acid; coloration
期刊名称：ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH （ 影响因子：0.287； 五年影响因子：0.593 ）
ISSN： 0792-156X
年卷期： 2017 年 69 卷
页码：
收录情况： SCI
摘要： A 60 day feeding trial was carried out to evaluate the effect on growth, survival, amino acid composition, and coloration of hatchery-cultured mud crab (Scylla paramamosain) instar (0.41 +/- 0.05 g) fed: fish Harpadon nehereus, Chinese mystery snail Cipangopaludina chinensis, and artificial feed. Each food type was assigned to eight tanks (10 crabs per tank). Results showed that the growth of mud crab is significantly affected by food type. Crabs fed the artificial feed showed specific growth rate comparable to crabs fed the snail C. chinensis, and higher growth rate compared to crabs consuming fish H. nehereus. Amino acid profiles of whole crabs were found to be highly correlated with dietary amino acid profiles. Crabs fed dry feed showed higher L* value (lighter colour) and b* value (higher intensity in blue colour) compared to crabs fed the other two diets. In conclusion, it is clear that artificial feed is potentially an alternative diet for hatchery-cultured mud crab (S. paramamosain) instar in terms of growth rate. However, it is suggested that paler carapace color might be related to insufficient dietary intake of carotenoids from the artificial feed.
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