摘要
通过对野生及人工养殖的中国对虾的肌肉、肝胰脏、性腺及卵的脂肪酸的分析比较，结果显示野生及人工养殖的中国对虾都含有大量的ω－３系列高度不饱和脂肪酸，这与其它海洋甲壳类的脂肪酸组成相类似；与野生的中国对虾相比较，人工养殖对虾的各组织及卵含有较高比例的亚油酸及较低比例的二十二碳六烯酸（ＤＨＡ）。野生与人工养殖的中国对虾在脂肪酸组成上的这一差异，是由于它们的生态环境及所摄食物的不同所造成的。从我们先前的实验证明ω－３系列和ω－６系列长链高度不饱和脂肪酸是中国对虾的必需脂肪酸，其中尤以ＤＨＡ最为重要，对于幼虾的生长及亲虾的成熟都是必需的。可见在人工养殖中国对虾的配饵中添加富含ＤＨＡ的脂肪源将是提高人工养殖对虾产量和质量的一个重要途径。
Hepatopancreas, muscle., ovary and egg of shrimp were analysed for fatty acid compositions using gas chromatography. Comparisons were made between wild and cultured chinese shrimp (Penaeus chinensis). Results show that there are large proportions of ω- 3 polyunsaturated fatty acids in the fatty acid compositions of either wild or cultured shrimp. But compared with wild shrimp, there are higher proportion of linoleic acid and lower proportion of DHA in the fatty acid compositions of cultured shrimp. The difference is caused by different kind of food taken in and different ecological conditions. Baced on the fact that the DHA has the highest EFA value for chinese shrimp and there is the difference of fatty acid compositions between wild and cultured shrimp, it proves that the effective way to improve the shrimp quality and production in the artificial food some oils rich in ω-3 polyunsaturated fatty acids, especially DHA.
出处
《中国水产科学》
CAS
CSCD
1996年第1期16-20,共5页
Journal of Fishery Sciences of China
关键词
中国对虾
野生虾
养殖虾
脂肪酸
Penaeus chinensis, Wild shrimp, Cultured shrimp, Essential fatty acid
