您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

The impact of dietary DHA/EPA ratio on spawning performance, egg and offspring quality in Siberian sturgeon (Acipenser baeri)

文献类型： 外文期刊

作者： Luo, Lin 1 ; Ai, Lichuan 2 ; Li, Tieliang 1 ; Xue, Min 2 ; Wang, Jia 2 ; Li, Wentong 1 ; Wu, Xiufeng 2 ; Liang, Xufang 3 ;

作者机构： 1.Beijing Fisheries Res Inst, Beijing 100068, Peoples R China

2.Chinese Acad Agr Sci, Feed Res Inst, Natl Aquafeed Safety Assessment Stn, Beijing 100081, Peoples R China

3.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China

关键词： Acipenser baeri;Docosahexaenoic acid/eicosapentaenoic acid ratio;Spawning quality;Egg quality;Larval quality

期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The effect of different docosahexaenoic acids (DHAs)/eicosapentaenoic acids (EPAs) on the reproductive performance and offspring quality of Acipenser baeri was evaluated in a 6-month trial. Two isonitrogenous and isolipidic diets with different DHAs/EPAs of 1:1.9 and 1.9:1 were designed, and named after high EPA (HE) diet and high DHA (HD) diet. Stocking density was 12 kg/m(2), and 136 female fish were randomly divided into two groups of 68 fish per group. After a 6-month feeding period, the hybridization was conducted among maturing female A. baeri and male A. schrencki. The broodstock performance was recorded and 6000 larvae from each group were cultured to evaluate the growth performance. Compared with the HE females, the egg mass weight, fecundity and fertilization rate in HD groups increased 40.8%, 22.3% and 35.6% respectively. Serum estradiol (E2), 11-keto-testosterone and luteinizing hormone (LH) in HD females were significantly higher than those in HE females (P < 0.05). Eggs of females fed HD diet had almost double EPA, DHA and total polyunsaturated fatty acid (PUFA) to HE eggs. Thirty-five-day post-hatching larvae from females fed HD diet tended to present a better growth performance, with higher body length, body weight, weight gain and survival rate than those of larvae from HE group. The results demonstrate that feeding A. baeri female broodstock with high DHA would improve fecundity, egg hatchability, and the overall quality of the larvae. (C) 2014 Elsevier B.V. All rights reserved.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台