Phenomenon of compensatory growth in fish with emphasis on reasons and degree of compensation

Document Type : مقاله ترویجی

Authors

Persian Gulf Institute, Persian Gulf University, Bushehr, Iran

Abstract

Compensatory growth in fish is a phase of fast growth, which occurs after the re-feeding of fish following a period of feed deprivation or after abnormal conditions such as low temperature. In fish, the term compensatory growth is used usually to describe increases in growth rates in whole body length or mass. Some fish responses to the period of food restriction upon refeeding have included hyperphagia, enhanced feed efficiency and improved growth rates. Compensatory growth may be divided into different categories according to growth and feeding performance including: full compensation, partial compensation and overcompensation. Fish subjected to feed deprivation may partially or completely catch up in body size those that have not undergone feed deprivation and is fed continually that in study on juvenile gilthead sea bream (Sparus aurata), European sea bass (Dicentrarchus labrax) and juvenile sobaity (Sparidentex hasta) have been demonstrated. Fish even maybe catch up to more size of those (over compensation), that have been demonstrated this objective in study on hybrid sunfish. In this study will explain each of these conditions in fish.

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