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首页> 外文期刊>Aquaculture Research >Effect of fasting and refeeding on growth and body composition of redporgy, Pagrus pagrus L.
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Effect of fasting and refeeding on growth and body composition of redporgy, Pagrus pagrus L.

机译：禁食和进食对红por（Pagrus pagrus L.）的生长和身体组成的影响。

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摘要

Red porgies, Pagrus pagrus L., were fasted for 7, 14 or 28 days, and were then allowed to feed on pellets released from demand feeders. Biological responses during fasting and refeeding were examined, The factors considered were growth, organosomatic indices and proximate body composition (protein, fat, ash and moisture). Fasted red porgies lost weight and had higher relative weights of eviscerated body than control fish, Refeeding was accompanied by hyperphagy, which resulted in similar total food demand being shown by all groups. Fish which had been deprived of food displayed compensatory growth and the final weights of these fish at the end of the experiment were similar to controls, There were no significant changes caused by fasting in the relative proportion of body chemical components. Calculations based upon changes in protein and lipid content suggest that more protein than lipid is metabolized during the first phase (14 days) of a fast.
机译：禁食7日，14日或28日的红色短梗草（Pagrus pagrus L.），然后以从需求给料机释放的颗粒为食。检查了禁食和进食期间的生物学反应，考虑的因素包括生长，有机体指数和邻近的身体成分（蛋白质，脂肪，灰分和水分）。禁食的红色短尾鸭体重减轻，且内脏体的相对体重高于对照鱼。回食时伴有吞噬过多，导致各组的总食物需求量相似。被剥夺食物的鱼表现出补偿性生长，并且这些鱼在实验结束时的最终重量与对照相似，没有因空腹化学成分相对比例而引起的显着变化。根据蛋白质和脂质含量的变化进行的计算表明，在禁食的第一阶段（14天）中，蛋白质的代谢超过脂质。

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