摘要
本研究分析了有伊乐藻(Elodea nuttallii)组和对照组(无伊乐藻)中华绒螯蟹(Eriocheir sinensis)在生长、肌肉氨基酸和脂肪酸组成等方面的差异,探讨伊乐藻对中华绒螯蟹生长和营养品质的影响。结果显示,有伊乐藻组中华绒螯蟹体重、壳长和壳宽增长率与肥满度均显著高于无伊乐藻组(P<0.05),但肝胰腺指数和性腺指数差异不显著(P>0.05)。伊乐藻组中华绒螯蟹肌肉的氨基酸总量、必需氨基酸和鲜味氨基酸含量均显著高于无伊乐藻组(P<0.05);伊乐藻组的雌蟹肝胰腺中的鲜味氨基酸含量也显著高于无伊乐藻组(P<0.05),而伊乐藻组和无伊乐藻组的雄蟹肝胰腺氨基酸含量差异不显著(P>0.05)。伊乐藻组和无伊乐藻组的中华绒螯蟹肌肉脂肪酸组成和含量差异不显著(P>0.05),但伊乐藻组中华绒螯蟹的肝胰腺饱和脂肪酸(SFA)、单不饱和脂肪酸(MUFA)和多不饱和脂肪酸(PUFA)含量均显著高于无伊乐藻组(P<0.05)。综上所述,伊乐藻不仅有利于中华绒螯蟹的生长,而且能改善中华绒螯蟹的营养品质。
Aquatic plants are one of the most important ecological factors in Chinese mitten crab culture. However, the effects of aquatic plants on growth of Chinese mitten crab, Eriocheir sinensis have not been quantitatively evaluated, and their effects on nutritional quality remain vague. In this study, we investigated the influence of an aquatic plant （Elodea nuttallii） on growth and nutritional quality of Chinese mitten crab, and compared growth and amino acid and fatty acid composition of adult Chinese mitten crab reared in concrete ponds with and without E. nuttallii. The results showed significant differences （P〈0.05） in body weight, carapace length, carapace width, and condition factor between Chinese mitten crabs reared with and without E. nuttallii, but no differences （P〉0.05） in the hepatopancreas or gonado somatic indices were observed between crabs in the two rearing environments. Amino acid, essential amino acid, and flavored amino acid contents in the muscle of Chinese mitten crabs reared in ponds with E. nuttallii were significantly higher than those in crabs reared in ponds without E. nuttallii （P〈0.05）. The flavored amino acid contents in the hepatopancreas of female crabs reared with E. nuttallii were significantly higher than those in crabs reared without E. nuttallii （P〈0.05）, but no differences were detected in males （P〉0.05）. Muscle fatty acid composition and content were not different in crabs reared in the ponds with and without plants. However, saturated fatty acid, monounsaturated fatty acid, and polyunsaturated fatty acid contents in the hepatopancreas were significantly higher in crabs reared in the E. nuttallii ponds than in crabs reared in ponds without E. nuttallii （P〈0.05）. These results indicate that E. nuttallii enhances growth of Chinese mitten crab and should help improve the nutritional quality of Chinese mitten crab.
出处
《中国水产科学》
CAS
CSCD
北大核心
2017年第1期91-99,共9页
Journal of Fishery Sciences of China
基金
上海市中华绒螯蟹产业技术体系项目[沪农科(产)字2017第4号]
上海市科委崇明科技专项项目(13391912102)
上海市工程技术中心建设项目(13DZ2251800)
关键词
中华绒螯蟹
伊乐藻
生长
氨基酸
脂肪酸
Eriocheir sinensis
Elodea nuttallii
growth
amino acid
fatty acid
