This study analyzed the tissue indices,proximate composition,fatty acid and amino acid composition of edible tissues of male E.sinensis under three feeding modes(formulated diets(FD),natural diets(ND),and traditional ...This study analyzed the tissue indices,proximate composition,fatty acid and amino acid composition of edible tissues of male E.sinensis under three feeding modes(formulated diets(FD),natural diets(ND),and traditional diets(TD)).The results showed that different feeding modes had no impacts on the overall gonadal development,as no significant difference was found in gonadsomatic index among three treatments.For edible yield,three modes all had similar levels of the meat yield,hepatosomatic index,and total edible yield.Although different feeding modes did not affect the individual edible yield and gonadal development,significant differences were detected in the nutritional composition of males from three modes.For proximate composition,significant differences were found in the total lipids of gonads and the carbohydrate of hepatopancreas and meat.For fatty acids,crabs from ND had a higher proportion of monounsaturated fatty acids.In gonads and hepatopancreas,FD had a higher proportion of long-chain polyunsaturated fatty acids.For amino acids,FD had higher amino acid contents,while ND had the lowest.Except tryptophan,the essential amino acids scores of the meat were all greater than 100.As there was no significant difference on meat quality and meat yields between three feeding modes,this study suggests that the formulated diet could replace the natural diet and traditional diet towards sustainable crab farming in future.展开更多
In this study,Chinese mitten crabs from the Yangtze River and Yellow River were cultured in ponds in the Yellow River estuary,and their edible tissue proportion,edible yield,and nutrient composition were compared.No s...In this study,Chinese mitten crabs from the Yangtze River and Yellow River were cultured in ponds in the Yellow River estuary,and their edible tissue proportion,edible yield,and nutrient composition were compared.No significant differences were found in the total edible rate and proximate composition of edible tissues between the populations of Chinese mitten crabs from the Yangtze River and Yellow River.The content of C_(18:1n9)and total mono-unsaturated fatty acids(∑MUFA)in the female hepatopancreas of the Yangtze River population were significantly higher than those of the Yellow River population(P<0.05),whereas the contents of total n-3 poly-unsaturated fatty acids(∑n-3PUFA)were significantly lower than those of the Yellow River population(P<0.05).The content of C_(22:6n3)(DHA)in female gonads of the Yellow River population was significantly higher than that in the Yangtze River population(P<0.05).In the muscle,the DHA content in females of the Yellow River population was significantly higher than that of the Yangtze River population(P<0.05),the total content of highly unsaturated fatty acids(∑HUFA)was significantly higher than that of the Yangtze River population(P<0.05),and theΣHUFA content in males was significantly higher than that in the Yangtze River population(P<0.05).In the muscle,the contents of threonine,serine,glutamic acid,alanine,and proline of the Yangtze River population were significantly higher than those in the Yellow River population(P<0.05),regardless of sex.The average essential amino acid score of the muscles in the Yangtze River population was higher than that of the Yellow River population.In conclusion,there was no significant difference in the total edible rate and proximate composition of edible tissues between the two populations of the Yangtze River and the Yellow River after culture in the Yellow River estuary area,but there were some differences in the fatty acid composition of the edible tissue and the amino acid composition of the muscle,which might be related to genetic factors.展开更多
基金This study was funded by a general project(No.31572630)from the Natural Science Foundation of Chinathe Special Fund(CARS-48)of Chinese Agriculture Research System-48 from Ministry of Agriculture and Rural affairs of China+3 种基金a standard development project(No.125C0701)for mitten crab quality and classification from Ministry of Agriculture and Rural affairs of ChinaInfrastructure costs were supported by the construction and improvement project(No.A1-2801-18-1003)for high level university in Shanghai from Shanghai Education CommissionShanghai talents development fund for the young scientists(No.2018100)from Shanghai Municipal Human ResourcesSocial Security Bureau and the innovation and extension project(No.Y2017-4)of Science and technology from Jiangsu ocean and Fisheries Bureau.
文摘This study analyzed the tissue indices,proximate composition,fatty acid and amino acid composition of edible tissues of male E.sinensis under three feeding modes(formulated diets(FD),natural diets(ND),and traditional diets(TD)).The results showed that different feeding modes had no impacts on the overall gonadal development,as no significant difference was found in gonadsomatic index among three treatments.For edible yield,three modes all had similar levels of the meat yield,hepatosomatic index,and total edible yield.Although different feeding modes did not affect the individual edible yield and gonadal development,significant differences were detected in the nutritional composition of males from three modes.For proximate composition,significant differences were found in the total lipids of gonads and the carbohydrate of hepatopancreas and meat.For fatty acids,crabs from ND had a higher proportion of monounsaturated fatty acids.In gonads and hepatopancreas,FD had a higher proportion of long-chain polyunsaturated fatty acids.For amino acids,FD had higher amino acid contents,while ND had the lowest.Except tryptophan,the essential amino acids scores of the meat were all greater than 100.As there was no significant difference on meat quality and meat yields between three feeding modes,this study suggests that the formulated diet could replace the natural diet and traditional diet towards sustainable crab farming in future.
基金China Agriculture Research System of MOF and MARA(No.CARS-48)industry leading talent project of Yellow River Delta(DYRC20190210).
文摘In this study,Chinese mitten crabs from the Yangtze River and Yellow River were cultured in ponds in the Yellow River estuary,and their edible tissue proportion,edible yield,and nutrient composition were compared.No significant differences were found in the total edible rate and proximate composition of edible tissues between the populations of Chinese mitten crabs from the Yangtze River and Yellow River.The content of C_(18:1n9)and total mono-unsaturated fatty acids(∑MUFA)in the female hepatopancreas of the Yangtze River population were significantly higher than those of the Yellow River population(P<0.05),whereas the contents of total n-3 poly-unsaturated fatty acids(∑n-3PUFA)were significantly lower than those of the Yellow River population(P<0.05).The content of C_(22:6n3)(DHA)in female gonads of the Yellow River population was significantly higher than that in the Yangtze River population(P<0.05).In the muscle,the DHA content in females of the Yellow River population was significantly higher than that of the Yangtze River population(P<0.05),the total content of highly unsaturated fatty acids(∑HUFA)was significantly higher than that of the Yangtze River population(P<0.05),and theΣHUFA content in males was significantly higher than that in the Yangtze River population(P<0.05).In the muscle,the contents of threonine,serine,glutamic acid,alanine,and proline of the Yangtze River population were significantly higher than those in the Yellow River population(P<0.05),regardless of sex.The average essential amino acid score of the muscles in the Yangtze River population was higher than that of the Yellow River population.In conclusion,there was no significant difference in the total edible rate and proximate composition of edible tissues between the two populations of the Yangtze River and the Yellow River after culture in the Yellow River estuary area,but there were some differences in the fatty acid composition of the edible tissue and the amino acid composition of the muscle,which might be related to genetic factors.
