| 摘要: |
| 【目的】研究3种养殖模式下澳洲淡水龙虾肌肉中脂肪酸组成的差异，对脂肪酸品质进行综合评价，为澳洲淡水龙虾养殖模式筛选提供参考依据。【方法】采用GB 5009.168－2016标准，测定稻田、池塘和水泥池等3种养殖模式下澳洲淡水龙虾成虾肌肉中脂肪酸的组成及其含量,并对脂肪酸数据进行主成分分析及评价，筛选最佳养殖模式。【结果】3种养殖模式下的澳洲淡水龙虾肌肉中均含有18种脂肪酸，且均以油酸含量最高，亚油酸次之；3种养殖模式下澳洲淡水龙虾肌肉中饱和脂肪酸、（n-3）系多不饱和脂肪酸总量均以稻田养殖模式最高，而不饱和脂肪酸、多不饱和脂肪酸和高不饱和脂肪酸总量均以池塘养殖模式最高，单不饱和脂肪酸、（n-6）系多不饱和脂肪酸、（n-9）系多不饱和脂肪酸和必需脂肪酸总量均以水泥池养殖模式最高。主成分分析显示，肉豆蔻酸、花生酸、棕榈油酸、二十碳三烯酸和DHA等5种脂肪酸的载荷权数均大于0.950，是澳洲淡水龙虾的主要特征脂肪酸，其对成虾脂肪酸品质的影响最大；由主成分表达函数式和贡献率，构建了澳洲淡水龙虾成虾脂肪酸品质综合评价函数式，计算得到3种养殖模式下成虾脂肪酸品质综合评价分值,表现为稻田养殖模式（4.116）＞水泥池养殖模式（-1.851）＞池塘养殖模式（-2.265）。【结论】稻田养殖模式下的澳洲淡水龙虾成虾的脂肪酸品质表现最优，为最佳养殖模式。 |
| 关键词: 澳洲淡水龙虾；养殖模式；脂肪酸品质 水产养殖 |
| DOI： |
| 分类号: |
| 基金项目:福建省科技厅省属公益类科研专项（2019R1022-7）；福建省农业科学院创新团队项目（STIT2017-1-12）；福建省农业科学院科技服务团队项目（KJFW19） |
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| Comparison of fatty acid quality in muscle of Cherax quadricarinatus in three breeding modes |
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LUO Qin
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| Abstract: |
| 【Objective】This study investigated differences of fatty acid composition in muscles of Cherax quadricarinatus in three breeding modes and quality of fatty acid was comprehensively evaluated to provide reference for screening C. quadricarinatus breeding modes.【Method】National standard of GB 5009.168－2016 was used to determine composition and contents of fatty acids in muscles of adult C. quadricarinatus breeding in paddy field,pond and cement pond.Principal component analysis and evaluation of fatty acid data were carried out to screen best breeding mode.【Result】The muscles of C. quadricarinatus in 3 breeding modes all contained 18 kinds of fatty acids,and oleic acid had the highest content followed by linoleic acid.Total amounts of saturated fatty acids and (n-3) polyunsaturated fatty acids of C. quadricarinatus muscle in paddy field pond culture were the highest.Total amounts of unsaturated fatty acids, polyunsaturated fatty acids and high unsaturated fatty acids were the highest in pond.Total amounts of monounsaturated fatty acids,(n-6) polyunsaturated fatty acids,(n-9) polyunsaturated fatty acids and essential fatty acids were the highest in concrete pond.Principal component analysis showed that load weights of nutmeg acid,peanut acid,palmitic acid,eicosadienoic acid and DHA were over 0.950,and they were main characteristic fatty acids of C. quadricarinatus with the greatest influence on fatty acid quality of adult shrimp.The comprehensive evaluation function was constructed by expression function of principal components and contribution rate.Comprehensive evaluation showed that fatty acid quality of the three kinds of shrimp was in the order of paddy field culture mode (4.116)>concrete pond culture mode (-1.851)>pond culture mode (-2.265).【Conclusion】Paddy field culture mode was the best culture mode with best fatty acid quality of C. quadricarinatus. |
| Key words: Cherax quadricarinatus breeding mode fatty acid quality aquaculture |
