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首页> 外文期刊>Fisheries Science >Effect of dietary lipid level on growth performance and feed utilization of juvenile kelp grouper Epinephelus bruneus
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Effect of dietary lipid level on growth performance and feed utilization of juvenile kelp grouper Epinephelus bruneus

机译：日粮脂质水平对海带石斑鱼幼体海螯虾生长性能和饲料利用率的影响

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A growth trial was conducted to evaluate the effect of dietary lipid level on juvenile kelp grouper Epinephelus bruneus. Juvenile kelp grouper were fed isonitrogenous diets (470 g/kg crude protein) with four levels of crude lipid at 60 g/kg (CL60), 130 g/kg (CL130), 210 g/kg (CL210), and 270 g/kg (CL270) for 56 days. The highest growth performance and feed utilization were found in the CL130 diet group. A high dietary lipid level (CL270 diet) significantly decreased growth performance and feed utilization. A significant difference in apparent digestibility was only observed in protein, which was highest in the CL130 diet groups. The highest retention for protein, energy, and lipid was found in the CL130 diet group. The dietary lipid levels significantly changed whole-body and liver compositions, the highest being the CL60 diet group for crude protein level and the CL210 diet group for crude lipid level. Based on a second-order polynomial regression analysis of crude lipid level against specific growth rate and protein efficiency ratio, the optimum dietary lipid level for kelp grouper was estimated to be 152 and 154 g/kg diet, respectively. Keywords Dietary lipid level - Digestibility - Feed utilization - Growth - Kelp grouper
机译：进行了一项生长试验，以评估日粮脂质水平对少年海带石斑鱼大头菜（Epinephelus bruneus）的影响。给幼小海带石斑鱼饲喂含氮量为四等水平的同质日粮（470 g / kg粗蛋白），分别为60 g / kg（CL60），130 g / kg（CL130），210 g / kg（CL210）和270 g / kg公斤（CL270），持续56天。 CL130日粮组的生长性能和饲料利用率最高。高血脂水平（CL270饮食）显着降低了生长性能和饲料利用率。仅在蛋白质中观察到表观消化率的显着差异，这在CL130饮食组中最高。在CL130饮食组中，蛋白质，能量和脂质的保留率最高。饮食中的脂质水平显着改变了人体和肝脏的组成，最高的是粗蛋白水平的CL60饮食组和粗脂肪水平的CL210饮食组。根据粗脂质水平对特定生长率和蛋白质效率比的二阶多项式回归分析，海带石斑鱼的最佳饮食脂质水平估计分别为152和154 g / kg饮食。关键词膳食脂质水平-消化率-饲料利用-生长-海带石斑鱼

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