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首页> 外文期刊>Aquaculture Reports >Effect of dietary lipid on growth performance, body composition, plasma biochemical parameters and liver fatty acids content of juvenile yellow drum Nibea albiflora
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Effect of dietary lipid on growth performance, body composition, plasma biochemical parameters and liver fatty acids content of juvenile yellow drum Nibea albiflora

机译：日粮脂质对黄drum鱼种生长性能，身体成分，血浆生化参数和肝脂肪酸含量的影响

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A feeding trial was conducted to determine the dietary lipid requirement and its effects on body composition, plasma biochemical parameters and liver fatty acids content in juvenile yellow drum Nibea albiflora. Six animal groups (initial weights, 17.7+/-0.20g) were fed isonitrogenous diets formulated with increasing lipid levels (52, 70, 94, 111, 129 and 153gkg^-^1, labeled as L50, L70, L90, L110, L130, L150, respectively) using menhaden oil, twice daily to apparent satiation, for 8 weeks. The results showed that the weight gain and specific growth rate (SGR) of fish fed L130 and L150 lipid diets were significantly higher than those of the animals on the L50 lipid diet. The feed conversion rate (FCR) of fish fed the L130 lipid diet was significantly lower compared with the values obtained for the other groups. Hepatosomatic index (HSI) of fish fed the L90 lipid diet was significantly higher than that of animals on L150 lipid. Whole body and muscle lipid contents increased with increasing dietary lipid level, and the dietary fatty acid profile was reflected in liver tissue. Liver eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) contents in fish fed with the L150 diet were significantly higher compared with the values recorded in the other groups. Total highly-unsaturated fatty acid (HUFA) content in liver showed an increasing trend, whereas total saturated fatty acid (SFA) and mono-unsaturated fatty acid (MUFA) contents in liver tended to decrease with increasing dietary lipid levels. The plasma triglyceride and cholesterol contents of juvenile N. albiflora increased with the increasing dietary lipid level. Analysis by the broken-line model of percent weight gain indicated the optimal dietary lipid level in juvenile N. albiflora to be 120gkg^-^1 of the diet.
机译：进行了一项饲喂试验，以确定膳食中的脂质需求量及其对幼体黄花苜蓿白花蛇舌草身体组成，血浆生化参数和肝脏脂肪酸含量的影响。给六组动物（初始体重17.7 +/- 0.20g）喂以同等水平的日粮，这些日粮的脂质水平较高（52、70、94、111、129和153gkg ^-^ 1，标记为L50，L70，L90，L110， L130，L150）分别使用薄荷油，每天两次至明显饱腹感，持续8周。结果表明，饲喂L130和L150脂质饮食的鱼的体重增加和比生长速率（SGR）显着高于L50脂质饮食的动物。饲喂L130脂质饲料的鱼的饲料转化率（FCR）与其他组相比明显较低。饲喂L90脂质饮食的鱼的肝体指数（HSI）显着高于使用L150脂质的动物。随着饮食中脂质水平的增加，全身和肌肉中的脂质含量也随之增加，并且饮食中的脂肪酸谱反映在肝脏组织中。用L150日粮喂养的鱼的肝二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）含量明显高于其他组。肝脏中总高不饱和脂肪酸（HUFA）含量呈上升趋势，而肝脏中总饱和脂肪酸（SFA）和单不饱和脂肪酸（MUFA）含量则随着饮食脂质水平的升高而降低。幼虫N. albiflora的血浆甘油三酸酯和胆固醇含量随饮食脂质水平的增加而增加。通过体重增加百分比的虚线模型的分析表明，幼年N. albiflora的最佳饮食脂质水平为饮食的120gkg ^-^ 1。

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