Growth performance and nutritional composition of Hemifusus ternatanus under artificial culturing conditions
文献类型: 外文期刊
作者: Tang, Baojun 1 ; Wei, Wei 1 ; Huang, Yanqing 1 ; Zou, Xiong 1 ; Yue, Yanfeng 1 ;
作者机构: 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China
2.Shanghai Ocean Univ, Coll Fisheries & Life, Shanghai 201306, Peoples R China
关键词: Hemifusus ternatanus;Growth;Body composition;Muscle;Amino acids;Fatty acids
期刊名称:AQUACULTURE ( 影响因子:4.242; 五年影响因子:4.723 )
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收录情况: SCI
摘要: Juvenile Hemifusus ternatanus were cultured in a double-layer culturing system for 186 weeks in order to assess growth performance. The growth rate of H. ternatanus under artificial culturing conditions was high during the first 137 week post-hatching, followed by a period of relatively slower growth. The shell of the cultured sub-adult whelks was shorter and thicker than that of the wild individuals with same weight. The proximate, amino acid and fatty acid compositions of H. ternatanus foot muscles were analyzed to compare the quality of cultured and wild whelks. Both the cultured and wild H. ternatanus contained high levels of flavor-enhancing amino acids. No significant difference was observed in protein content, moisture content or amino acid composition. The cultured whelks contained significantly higher levels of fat and ash (P < 0.05). The total saturated, monounsaturated, and polyunsaturated (PUFA) fatty acids were statistically similar between the cultured and wild groups; however, there were significant differences in the content of individual of fatty acids between the two groups, including 17: 0, 16: 1, 18: 1n-9c, 18: 2n-6t, 20: 4n-6, 22: 5n-3, 22: 6n-3, and n-6 PUFAs (P < 0.05). The fatty acids 21: 0, 15: 1, 22: 1n-9, 18: 2n-6c, and 18: 3n-3 were detected in the cultured H. ternatanus only. On the contrary, 18: 1n-9t was detected only in the wild H. ternatanus. This study provides novel information regarding the growth and composition of cultured H. ternatanus which will be helpful for the development of aquaculture practices for this species.
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