Effects of Dietary Protein to Energy Ratios on Growth, Body Composition and Digestive Enzyme Activities in Chinese Mitten-Handed Crab, Eriocheir Sinensis

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dc.contributor.authorCui, Yanyan
dc.contributor.authorMa, Qianqian
dc.contributor.authorSamwel Mchele Limbu
dc.contributor.authorDu, Zhen-Yu
dc.contributor.authorZhang, Nannan
dc.contributor.authorLi, Erchao
dc.contributor.authorChen, Li-Qiao
dc.date.accessioned2016-06-26T17:35:07Z
dc.date.available2016-06-26T17:35:07Z
dc.date.issued2016
dc.description.abstractThis study aimed to determine the optimal protein to energy ratio (P/E ratio) and evaluate the effect of dietary protein and lipid levels on growth performance, body composition and digestive enzymes activities in Chinese mitten-handed crab, Eriocheir sinensis. Nine practical diets containing three levels both for protein (DP 30%, 35% and 40%) and lipid (DL 2%, 7% and 12%) with P/E ratios ranging from 13.69 to 19.79 mg KJ−1 were fed to four replicates of crabs (3.39 ± 0.10 g) for 10 weeks. Weight gain increased significantly with the increase in DP level at each DL level. Moreover, weight gain increased in crabs fed with diets containing DL level from 2% to 12% and DP level from 30% to 35%. However, the diet containing 40% DP and 12% DL levels significantly decreased the growth performance and protein efficiency of the crabs. The whole crab and hepatopancreas lipid contents also increased as dietary lipid increased, but not dietary protein. The total protease activity increased significantly with the increase in dietary protein at each lipid level. The lipase activity was statistically comparable among different DL levels at each DP level. Taken together, the crab fed the diet containing 35% protein and 12% lipid levels with P/E 15.77 mg KJ−1 revealed optimal growth, feed utilization efficiency and digestive enzymes activities. Moreover, our study indicated that the higher dietary lipid level at a relatively lower dietary protein level could provide protein sparing effect in Eriocheir sinensisen_US
dc.identifier.citationCui, Y., Ma, Q., Limbu, S.M., Du, Z., Zhang, N., Li, E. and Chen, L., 2016. Effects of dietary protein to energy ratios on growth, body composition and digestive enzyme activities in Chinese mitten‐handed crab, Eriocheir sinensis. Aquaculture Research.en_US
dc.identifier.doi10.1111/are.13061
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2765
dc.language.isoenen_US
dc.publisherWileyen_US
dc.subjectEriocheir sinensisen_US
dc.subjectDietary protein to energy ratioen_US
dc.subjectLipiden_US
dc.subjectGrowthen_US
dc.subjectBody compositionen_US
dc.subjectDigestive enzymeen_US
dc.titleEffects of Dietary Protein to Energy Ratios on Growth, Body Composition and Digestive Enzyme Activities in Chinese Mitten-Handed Crab, Eriocheir Sinensisen_US
dc.typeJournal Article, Peer Revieweden_US
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