Determination the growth performance of Pike perch under intensive culture

Pike perch is valuable, endemic and economical species of the Caspian Sea. In this research has been tried to reach of biotechnical production. The weaning of pike perch was taken manually for ۱۲ days, which was first used for chironomid larvae, and gradually the concentrate and half-immersed plate were used. In this study, the growth parameters of pike perch were calculated over ۲۲۵ days (approximately ۷.۵ months), the average weight of fishes reached from ۲.۸۰±۰.۶ gr to ۵۴±۲۷ gr, which, if the conditions of the recirculation system were current, kept the temperature at about ۲۳ degrees, the results would be better than that. Survival rates in the first phase (growth stage of ۲.۸ g to ۹ g), the second phase (growth stage of ۹ g to ۲۷ g) and the third phase (growth stage of ۲۷ g to ۵۴ g) were ۵۲%, ۷۷% and ۸۵%, respectively. The instantaneous growth rates were calculated ۲.۵۸, ۱.۸۳, ۰.۶ and conversion coefficients of ۰.۹, ۱.۵ and ۱.۷, respectively. Daily growth rate was ۰.۱۳۷, ۰.۳ and ۰.۲۲ g/ day in different growth stages, respectively. The results of this study showed that pikeperch in intensive system has good production potential and can be grown up to ۲۵ kg/ m۳ with proper environmental conditions and proper management and use of domestic generation.

کلیدواژه ها:

Pike perch ، Growth factors ، Intensive culture ، Iran