首页|低盐养殖对拟穴青蟹肌肉营养成分的影响

低盐养殖对拟穴青蟹肌肉营养成分的影响

扫码查看
为探究低盐对拟穴青蟹(Scalla paramamosain)肌肉营养成分的影响,将平均体质量为(254.00±36.81)g的拟穴青蟹在循环水中饲养60 d,一蟹一盒.试验将盐度25的正常海水直接降至20,再以日均2.5的幅度将盐度降至15和10,最后以日均2的幅度将盐度降至5,使试验组盐度分别为5(S5)、10(S10)、15(S15)、20(S20)和25(S25,对照组),每组设3个重复,每组30只蟹.结果显示:低盐养殖青蟹的肌肉粗蛋白含量变化在(16.2±1.9)%~(19.5±0.7)%之间,与对照组无明显差异;S10组蟹肌肉粗脂肪含量显著高于对照组S25(P<0.05);S15组的肌肉氨基酸总量(TAA)为(18.63±0.91)%,必需氨基酸(EAA)(6.49±0.41)%和呈味氨基酸(DAA)(7.48±0.21)%均高于对照组,氨基酸指数(EAAI)最优为80.36.S10组的高度不饱和脂肪酸(HUFA)与EPA含量显著高于对照组(P<0.05),n-3族多不饱和脂肪酸(Σn-3PUFA)含量为33.0%,达到最高.结果表明,在10~15的低盐环境下养殖拟穴青蟹,有助于改善肌肉营养.
Effect of Culture at Low Salinity on Muscular Nutrient Composition of Mud Crab Scalla paramamosain
In order to investigate the effect of low salinity on the nutrient composition of muscle of mud crab Scalla paramamosain,the mud crab with body mass of(254±36.81)g were reared in circulating water for 60 days,one crab per box,exposed to salinity of 5(S5),10(S10),15(S15),20(S20),and 25(S25,control group)in the aquatic environment,at a salinity reducing rate of 1/d from natural sea water with salinity of 25 to 20,and then reducing the salinity to 1 and 10 at an average daily amplitude of 2.5,and finally reducing the salinity to 5 at an average daily rate of 2,each group with 3 replicates and 30 crabs in each group.Results showed that there was muscular crude protein content from(16.2±1.9)%to(19.5±0.7)%in the mud crab cultured in low salinity,without significant difference from that in the crab in the control group.There was significantly higher muscular crude fat content in groups S10 and S25 than that in the control group(P<0.05).The mud crab in group S15 had total muscular amino acids(TAA)amount of(18.63±0.91)%,essential amino acid(EAA)of(6.49±0.41)%and flavored amino acid(DAA)(7.48±0.21)%,higher than those in the control group,with the optimal amino acid index(EAAI)of 80.36.The contents of highly unsaturated fatty acids(HUF A)and EPA were found to be significantly higher in group S10than those in control group(P<0.05),with the maximal n-3 polyunsaturated fatty acids(Σn-3PUFA)content(33.0%).The findings indicated that the muscle nutrition is improved in the mud crab cultured at salinity from 10 to 15.

Scalla paramamosainlow salinitymusclenutrient composition

陈思仪、黄鑫岚、李婷婷、刘铮、吴周宇、邵逸臻、张丽梅、黄伟卿

展开 >

宁德师范学院生命科学与工程学院,福建宁德 352100

宁德师范学院海洋学院,福建宁德 352100

闽东水产品精深加工福建省高校工程研究中心,福建宁德 352100

宁德市鼎诚水产有限公司,福建宁德 352100

展开 >

拟穴青蟹 低盐度 肌肉 营养成分

2020年中央引导地方科技发展专项福建省海洋经济发展专项宁德师范学院科技特派员科研资助专项国家级大学生创新项目福建省自然科学基金

2020L3011FJHJF-L-2022-182021ZX5022022103980032022J05273

2024

水产学杂志
中国水产科学研究院 黑龙江水产研究所

水产学杂志

影响因子:0.497
ISSN:1005-3832
年,卷(期):2024.37(3)
  • 25