摘要
[目的]了解选育鲫的生长特性及肌肉品质.[方法]开展了为期60 d的养殖试验,分析选育后第5代鲫(选育组)和非选育鲫(对照组)的生长性能、肌肉的常规营养成分、氨基酸和脂肪酸的组成.[结果]选育组的生长指标(体质量、全长、体长、体高)均显著高于对照组(P<0.05).选育组粗脂肪、水分含量显著低于对照组(P<0.05).选育组饱和脂肪酸(SFA)、多不饱和脂肪酸(PUFA)含量均极显著低于对照组(P<0.01).选育组必需氨基酸(EAA)极显著高于对照组(P<0.01),半必需氨基酸(HEAA)显著低于对照组(P<0.05).选育组氨基酸评分(AAS)、化学评分(CS)、必需氨基酸指数(EAAI)均高于对照组.[结论]选育组具有生长快的优良养殖特性以及高蛋白低脂肪、氨基酸含量高及比例相对均衡的特性.研究结果为选育鲫的饲养管理及进一步利用提供了参考.
Abstract
[Objective]The study aimed to investigate the growth characteristics and muscle quality of the breeding population of Carassius auratus(crucian carp).[Method]A 60-day culture experiment was car-ried out to analyze the growth performance,muscle nutrients,amino acid,and fatty acid composition of the 5th-generation crucian carp after breeding(breeding group)and non-breeding crucian carp(control group).[Result]The growth indexes in the breeding group,including body weight,total length,body length,and body height,were significantly higher than those in the control group(P<0.05).The contents of crude fat and moisture were significantly lower in the breeding group than those in the control group(P<0.05).The contents of saturated fatty acid(SFA)and polyunsaturated fatty acid(PUFA)were significantly lower in the breeding group than those in the control group(P<0.01).The essential amino acid(EAA)was significantly higher in the breeding group than in the control group(P<0.01),and the semi-essential amino acid(HEAA)was significantly lower than that of the control group(P<0.05).Amino acid score(AAS),chemi-cal score(CS),and essential amino acid index(EAAI)in the breeding group were higher than those in the control group.[Conclusion]The breeding group had excellent cultural characteristics of fast growth,high protein and low fat,high amino acid content,and relatively balanced proportions.The findings would pro-vide some reference for the breeding management and further utilization of breeding Carassius auratus.
维普
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