期刊文献

The optimum threonine requirement in diets of juvenile hybrid grouper (epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂) 收藏

少年杂交石榴石饮食中最佳的苏氨酸要求（Epinephelus fuscoguttatus♀×epinephelus lanceolatus♂）
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作者
Ma Lei[1];Wu Xiaoyi[1];Ye Bo[1];Geng Lina[1];Zhou Zhiyu[1];Wang Xiao[1];Mu Wei[1]
作者单位
[1]Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology Department of Aquaculture Hainan University Haikou China
关键词
feed utilization;growth;gut micromorphology;hybrid grouper;threonine
关键词译文
饲料利用率;生长;肠道微晶;杂交石斑鱼;苏氨酸
发布日期
23 January 2021
页码
829-840
DOI
10.1111/anu.13227
来源信息
Aquaculture Nutrition ISSN：1353-5773, 2021年, 27卷, 3期, 829-840页
摘要
A six‐week growth trial was conducted to evaluate the optimum threonine (Thr) requirement in diets of juvenile hybrid grouper (Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂). Six isoenergetic, isoproteic and isolipidic diets were formulated to contain 5.4, 7.5, 10.3, 11.5, 13.7 and 15.2 g/kg dry matter dietary Thr levels. Results showed that and fish fed 5.4 g/kg dietary Thr had the lowest weight gain percentage (WG%) or protein productive value (PPV) among all experimental treatments. Analysis by the quadratic regression indicated that the optimum Thr requirement for maximum WG% or PPV in diets for hybrid grouper was estimated to be 11.48 or 13.55 g/kg of dry matter. The mRNA expression of hepatic growth hormone receptor 1 (GHR1) in fish fed 11.5 and 13.7 g/kg dietary Thr was higher than that of fish fed other dietary Thr levels. Fish fed 5.4 g/kg dietary Thr had the lowest whole‐body protein contents and the lowest expression of hepatic target of rapamycin (TOR), ribosomal protein S6 kinase 1 (S6 K1) among all experimental groups. In conclusion, the optimum dietary Thr requirement for best growth of hybrid grouper was estimated to be 11.48 g/kg dry matter (corresponding to 23.27 g/kg dietary protein).
摘要译文
进行了六周的增长试验，以评估少年杂交石榴石饮食中的最佳苏氨酸（Thr）要求（Epinephelus fuscoguttatus♀×epinephelus lanceolatus♂）。配制六种异种酸，isoeNophotic和溶质性饮食含有5.4,7.5,10.3,11.5,13.7和15.2g / kg干酪饮食THR水平。结果表明，在所有实验治疗中，喂养5.4g / kg膳食Thr的鱼类喂养5.4g / kg膳食Thr在所有实验治疗中具有最低的重量增益百分比（Wg％）或蛋白质生产价值（PPV）。二次回归的分析表明，杂交地雷普饮食中最大WG％或PPV的最佳Thr要求估计为11.48或13.55g / kg干物质。喂食11.5和13.7g / kg膳食Thr的鱼中肝生长激素受体1（GHR1）的mRNA表达高于饲喂其他膳食TH水平的鱼类。喂养5.4g / kg膳食Thr的鱼具有最低的全身蛋白质含量和雷帕霉素（rin），核糖体蛋白S6激酶1（S6 K1）的最低表达在所有实验组中。总之，最佳的饮食性能最佳生长杂交地震器的要求估计为11.48g / kg干物质（对应于23.27g / kg膳食蛋白）。
Ma Lei[1];Wu Xiaoyi[1];Ye Bo[1];Geng Lina[1];Zhou Zhiyu[1];Wang Xiao[1];Mu Wei[1]. The optimum threonine requirement in diets of juvenile hybrid grouper (epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂)[J]. Aquaculture Nutrition, 2021,27(3): 829-840