Effects of different culture modes on nutrients of Chinese soft-shelled turtle (Trionyx sinensis)

【Objective】The nutrients of Chinese soft-shelled turtles(Trionyx sinensis) under different culture modes was studied to provide references for improving its nutrition value and healthcare function. 【Method】The nutritional composition in muscle and calipash, and the compositions of amino acids and fatty acids in muscle were analyzed between the turtles cultured in ecology, pond and green house conditions. 【Result 】Crude protein, lipid and collagen in muscle were higher in ecology turtles compared with the turtles cultured in ponds and green houses. However, moisture content was the lowest in ecology cultured turtles. The contents of moisture, protein and collagen in calipash of ecology cultured turtles were significantly higher(P0.05), while lipid content was the lowest. There were 16 kinds of amino acids detected in muscle of three kinds of turtles. The ecology cultured turtles had the highest content of total amino acids, essential amino acids, and flavor amino acids in muscle. There were 21 fatty acids including 7 kinds of saturated fatty acids, 6kinds of monounsaturated fatty acids and 8 kinds of unsaturated fatty acids. For monounsaturated fatty acids composition,the highest value was observed in the original ecology cultured turtles, which was significantly higher than other groups(P0.05). Total unsaturated fatty acid content was the highest in green house turtles. However, except for C18:2n-6, other unsaturated fatty acids was the highest in the original ecology cultured turtles. 【Conclusion】The results showed that the edible quality and taste of the original ecology cultured turtles were the best among three cultured modes.