Understanding the effects of different natural diets on the growth performance and nutritional quality of mud crab Scylla paramamosain is important for both aquaculture and human nutrition perspectives. In the present study, female S. paramamosain were fed with two different natural diets, a marine bivalve species Potamocorbula rubromuscula (initial weight of the experimental crabs: 192.1 ± 29.2 g) and lizardfish Harpadon nehereus (initial weight of the experimental crabs: 188.1 ± 42.9 g) during the post-mating period. Furthermore, the weight gain ratio (WGR), specific growth rate (SGR), gonado-somatic index (GSI), hepatosomatic index (HSI), proximate compositions, total carotenoid content, amino and fatty acid profiles were investigated. Different diets affected HSI, carotenoid, lipid, amino acid and fatty acid contents in the claw muscle, hepatopancreas and ovary of female S. paramamosain. However, different diets did not affect the growth parameters including WGR, SGR and GSI. Crabs fed with P. rubromuscula had significantly higher amino acid content in the claw muscle, hepatopancreas and ovary, but lower HSI value and lipid content in the hepatopancreas and ovary compared with the crabs fed with H. nehereus. The carotenoid content was significantly higher in the hepatopancreas and ovary tissues of crabs fed with P. rubromuscula, whereas crab fed with H. nehereus displayed higher carotenoid content in the claw muscle. These results indicated that feeding S. paramamosain with P. rubromuscula could enhance amino acid contents (in claw muscle, hepatopancreas and ovary) and carotenoid contents in the hepatopancreas and ovary. Moreover, this study showed that the post-mating period is a critical period for nutritional deposition and a short feeding strategy during this period dramatically alters the body biochemical compositions.

中文翻译：

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两种天然饲料对交配后雌性青蟹（Scylla paramamosain）生化成分的影响

了解不同天然日粮对青蟹青蟹生长性能和营养质量的影响对于水产养殖和人类营养方面都很重要。在本研究中，女性S。用两种不同的天然饲料喂养paramamosain，一种是海洋双壳类Potamocorbula rubromuscula（实验蟹的初始重量：192.1 ± 29.2 g）和蜥蜴鱼Harpadon nehereus（实验蟹的初始重量：188.1 ± 42.9 g）在交配后期间。此外，还研究了体重增加率（WGR）、比生长率（SGR）、性腺体指数（GSI）、肝体指数（HSI）、近似成分、类胡萝卜素总含量、氨基酸和脂肪酸谱。不同日粮对雌性S的HSI、类胡萝卜素、脂类、氨基酸和脂肪酸的含量有影响。帕拉莫赛因。然而，不同的日粮不影响包括 WGR、SGR 和 GSI 在内的生长参数。用P喂养的螃蟹。红肌与喂食H . 尼赫鲁斯_ 用P喂养的螃蟹的肝胰腺和卵巢组织中的类胡萝卜素含量显着升高。rubromuscula，而螃蟹喂食H。nehereus在爪肌中显示出较高的类胡萝卜素含量。这些结果表明，喂食S。与P的paramamosain。红肌可提高氨基酸含量（爪肌、肝胰腺和卵巢中）和肝胰腺和卵巢中的类胡萝卜素含量。此外，这项研究表明，交配后时期是营养沉积的关键时期，在此期间的短期喂养策略会显着改变身体的生化成分。