文献类型： 外文期刊
作者： Li, Wenjia 1 ; Wei, Fengxian 1 ; Xu, Bin 1 ; Wang, Shuqi 2 ; Li, Shaoyu 1 ; Xuan, Xiongzhi 3 ;
作者机构： 1.Henan Acad Agr Sci, Inst Anim Husb & Vet Sci, Zhengzhou 450003, Henan, Peoples R China
2.Shantou Univ, Guangdong Prov Key Lab Marine Biol, Shantou, Peoples R China
3.Suzhou Polytech Inst Agr, Suzhou 215008, Peoples R China
关键词： amino acid; feed utilization; growth performance; lysine requirement; morphological; Protonibea diacanthus
期刊名称：AQUACULTURE NUTRITION （ 影响因子：3.497； 五年影响因子：3.78 ）
ISSN： 1353-5773
年卷期： 2020 年 26 卷 4 期
页码：
收录情况： SCI
摘要： An 8-week experiment was conducted to determine the optimal dietary lysine requirement for juvenile Protonibea diacanthus. Six isonitrogenous and isolipidic diets were formulated to contain levels of 10.8 (L10.8), 18.2 (L18.2), 26.1 (L26.1), 33.9 (L33.9), 40.7 (L40.7) and 48.6 g/kg (L48.6) of diets and were fed to the juvenile Protonibea diacanthus, respectively. The results indicated that weight gain (WG), specific growth rate (SGR), protein efficiency ratio (PER) and final weight (FW) increased as the dietary lysine level increased from 10.8 to 26.1 g/kg and then decreased as the dietary lysine levels further increased (p < .05). The lowest feed conversion ratio (FCR) was found when dietary lysine level was 26.1 g/kg. Analysis of specific growth rate by two slope broken-line model indicated that the estimated optimal dietary levels of lysine for juvenile Protonibea diacanthus was 23.06 g/kg (51.24 g/kg dietary protein).
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