WANG Wen,WANG Qian-qian,ZHANG Yu-rong,et al. Effects of Starvation on Body Chemical Composition and Energy Density in Juvenile Nile tilapia (Oreochromis niloticus) [J].期刊社,2012,29(05):20-25.[doi:10.11721/cqnuj20120506]
饥饿对尼罗罗非鱼幼鱼粗化学成分的影响 (动物科学)
- Title:
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Effects of Starvation on Body Chemical Composition and Energy Density in Juvenile Nile tilapia (Oreochromis niloticus)
- 文献标志码:
- A
- 摘要:
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为讨论尼罗罗非鱼(Oreochromisniloticus)幼鱼的鱼体化学成分和能量密度随饥饿时间延长的变化规律,2010年1月采集初始体质量为(3.61±0.13)g的尼罗罗非鱼幼鱼40尾,以饥饿处理0d为对照,将饥饿处理8、15、22和45d分为4个组,分别测定所有材料的鱼体化学成分,估算了能量密度。结果表明,随饥饿时间(t)天数的延长,尼罗罗非鱼幼鱼的蛋白质含量(PRO)、脂肪含量(FAT)和能量密度(E)降低,可以分别描述为方程PRO=14.727e-0.0065t(r2=0.707,n=37,p<0.05)、FAT=2.2955e-0.0366t(r2=0.552,n=37,p<0.05)和E=4.4781e-0.0113t(r2=0.694,n=37,p<0.05);随饥饿时间(t)天数的延长,含水量(WAT)和灰分含量(ASH)升高,可以分别描述为方程WAT=76.1969e0.0013t(r2=0.566,n=37,p<0.05)和ASH=4.4678e0.0083t(r2=0.729,n=37,p<0.01);PRO、FAT和E3者均与WAT呈显著的负线性关系,可以分别描述为方程PRO=61.9699-0.6251WAT(r2=0.740,n=37,p<0.05)、FAT=47.9088-z.5938WAT(r2=0.899,n=37,p<0.05)和E=33.5489-0.3821WAT(r2=0.955,n=37,p<0.05)。研究认为该种鱼在饥饿初期大量消耗脂肪,并随着饥饿时间的延长,净耗量逐渐减少,同时在整个饥饿过程消耗蛋白质。
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