STUDIES ON GROWTH AND NUTRIENT COMPOSITION OF SCYLLA PARAMAMOSAIN CULTURED IN FLOATING MANGROVE ISLAND,FUJIAN
To explore the difference in nutrient composition of Scylla paramamosain between wild and cultured(in mangrove floating island in mariculture ponds),four S.paramamosain breeding groups were set up for experiment in the north of Dongshan Bay,Fujian,South China.They were mangrove(Kandelia odovata)floating island culture group(MG),Sesuvium portulacastrum floating island culture group(SG),no-plant floating island culture group(NG),and peripheral ring ditch culture group(PG).The experiment lasted for 120 days.The muscle nutrients of wild S.paramamosain captured near the experimental site(wild group,WG)were analyzed and compared.Results show that the weight gain rate,specific growth rate,meat production rate,and survival rate of S.paramamosain in the BG were higher than those in the MG,SG,and PG.The crude protein content in muscle of all the four experimental groups was high(64.78％～71.66％),while the crude lipid content was low(2.48％～3.01％).The total amino acids in the muscle of S.paramamosain in MG ranged from 60.54％to 68.68％.The total amino acids and essential amino acids in muscle were significantly higher than those of WG(P＜0.05).Indicated by the amino acid score(AAS)and chemical score(CS),the first limiting amino acid was methionine+cystine,and the essential amino acid index(EAAI)of each group was above 0.75.Unsaturated fatty acids,especially polyunsaturated fatty acids,were abundant in all experimental groups;and those of MG were significantly higher than WG's(P＜0.05).
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维普
