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| Comparison of Nutritional Composition in Eggs between Wild and Cultured Yellow Catfish Pelteobagrus f ulvidraco |
| LIANG Li,GUI Qingping,RAN Hui,JIANG Zuoyu,YAO Junjie |
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Abstract The contents and compositions of amino acids and fatty acids were analysed in eggs of wild col‐lected and cultured yellow catfish Pelteobagrus f ulvidraco in basin of Yangtuo River ,a tributary to Jin‐jiang River of Tongren ,Guizhou Province ,by a biochemical method and gas chromatography .The results showed that there were significantly lower total contents of amino acids ,essential amino acids and delicious amino acids in the eggs of wild yellow catfish than those in the cultured one (P<0 .05) ,with the first lim‐iting amino acids Met+Cys ,and essential amino acid indices of 55 .60 and 59 .12 ,respectively .The total saturated fatty acids were shown to be very significantly higher in the eggs of wild yellow catfish than those in the eggs of cultured one(P<0 .01) ,without significant difference in monounsaturated fatty acids between wild and cultured yellow catfish (P>0 .05) ,significantly lower polyunsaturated fatty acids in the eggs of wild yellow catfish than those in the cultured one (P<0 .01) .However ,there were very signifi‐cantly higher contents of eicosapentaenoic acid and the total docosahexaenoic acid in the eggs of wild yellow catfish than those in the cultured one(P<0 .01) ,with the ratio of n‐3 polyunsaturated fatty acids to n‐6 polyunsaturated fatty acids = 1 .57 in the eggs of wild yellow catfish and the ratio of n‐3 polyunsaturated fatty acids to n‐6 polyunsaturated fatty acids = 1 .80 in cultured yellow catfish .
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Received: 25 May 2016
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