中华绒螯蟹分子育种群体的区域养殖试验OA

In order to study the production performance of the molecular breeding population of Eriocheir sinensis in different breeding areas,and to provide a basis for subsequent breeding and promotion of varieties,the diffe-rences of growth performance and nutritional quality of adult crabs in four breeding bases of Shanghai Songjiang Sanmao Town,Baoshan Luojing Town,Chongming Hengsha Township and Chongming Sanxing Town were com-pared.The results showed as follows:①There were significant differences in body mass,fattenity,hepatopancreas index and gonadal index of cultured crabs in different regions(P<0.05).The growth variation was greater when the breeding environment was poor.②The overall heritability of body mass and shell length of the selected popula-tion was 0.358 and 0.357,respectively,which belonged to the medium heritability.③The contents of total choles-terol in hemolymph of adult crabs from different bases were different to some extent,and the activities of lipase and amylase in hepatopancreas were significantly different among different bases(P<0.05).④Crude protein and crude fat in muscle and hepatopancreas were significantly different among different sites(P<0.05).Essential and non-essential amino acids in muscle were not significantly different among the four sites(P>0.05),but essential and non-essential amino acids in hepatopancreas were significantly different among the four sites(P<0.05).⑤The contents of saturated fatty acids,monounsaturated fatty acids and polyunsaturated fatty acids in muscle and hepato-pancreas tissues of crabs from different bases were significantly different(P<0.05).The results showed that the molecular breeding population of Chinese mitten crab had good production performance in different breeding areas,which could be used for further breeding and popularization of breeding.