您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Comparison of L-lysine center dot HCl and L-lysine sulphate in the feed of Penaeus monodon and re-evaluation of dietary lysine requirement for P.monodon

文献类型： 外文期刊

作者： Niu, Jin 1 ; Chen, Xu 2 ; Lin, Hei-Zhao 2 ; Li, Chun-Hou 2 ; Wu, Kai-Chang 2 ; Liu, Yong-Jian 1 ; Tian, Li-Xia 1 ;

作者机构： 1.Sun Yat Sen Univ, South China Sea Resources Dev & Protect Collabora, Nutr Lab, Inst Aquat Econ Anim,Sch Life Sci, Guangzhou, Guangdong, Peoples R China

2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab Aquat Prod Proc, Minist Agr, Guangzhou, Guangdong, Peoples R China

关键词： Penaeus monodon; L-lysine HCl; L-lysine sulphate; growth

期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）

ISSN： 1355-557X

年卷期： 2017 年 48 卷 1 期

页码：

收录情况： SCI

摘要： Two trials were conducted to compare L-lysine HCl and L-lysine sulphate regarding its availability to Penaeus monodon, and further evaluate the optimum dietary lysine requirement. In experiment 1, five experimental diets were formulated (D1, D2, D3, D4 and D5), a basal diet (D1), aimed at a low-lysine concentration (2.22% dry matter), with lysine concentration of the other four diets increasing in two 0.25% L-lysine intervals from either L-lysine HCl (D2 and D3) or L-lysine sulphate (D4 and D5). Each diet was fed at a restricted rate to three groups of 40 shrimp for 74days. The highest values of growth performance (weight gain, WG; specific growth rate, SGR) and survival were observed with shrimp fed the L-lysine HCl diet. Feed efficiency (FE) of shrimp fed D2 was significantly higher than that of shrimp fed D1 and D5 (P<0.05), but without significant difference with shrimp fed D3 and D4 (P>0.05). In experiment 2, six diets (d1, d2, d3, d4, d5 and d6) were formulated with six graded levels of lysine (2.21%, 2.41%, 2.59%, 2.87%, 3.11% and 3.29% of diet). Each diet was randomly assigned to triplicate groups of 40 shrimp for 74days. WG, SGR and survival increased increasing levels of lysine up to 2.41% of diet and reached an apparent plateau. Broken-line model analysis on WG and SGR indicated that the optimum dietary lysine level for optimal growth of shrimp was 2.37% of diet, corresponding to 5.78% of dietary protein. In conclusion, results of this trial suggest that L-lysine HCl is superior to L-lysine sulphate when fed to Penaeus monodon and optimal growth can be obtained at lysine levels corresponding to 2.37% of diet, or 5.78% of dietary protein in this specie.

  • 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：中国水产科学研究院

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