نوع مقاله : مقاله پژوهشی
1 گروه شیلات، دانشکده منابع طبیعی، دانشگاه گیلان، صومعه سرا، گیلان، ایران.
2 گروه شیلات، پژوهشکده تالاب بین المللی هامون، دانشگاه زابل، زابل، ایران.
3 معاونت آبزی پروری، اداره کل شیلات گیلان، بندر انزلی، گیلان، ایران.
عنوان مقاله [English]
The present study evaluated the possibility of common carp (Cyprinus carpio) production in two different densities (0.27 and 1.33 kg/m3) and grass carp (Ctenopharyngodon idella) production (0.33 kg/m3) in Zincalume tanks (6 m diameter with 30 m3 volume) by providing water through the water reservoirs. The fishes were fed two times per day by formulated common carp feed. At the end of 85-day rearing period, growth parameters, biomass and survival rate were calculated. The results showed that some growth parameters of common carp such as weight gain and daily weight increase were higher in high density, but other parameters including percent body weight increase, specific growth rate, feed efficiency and food conversion ratio were higher in low density. It was concluded that it is possible to culture carp by using water reservoirs in Zincalume tanks and by managing approaches such as stocking, culturing period, water quality improvement and aeration will increase the amount of fish production. Ease of construction of Zincalume tanks and the presence of various waterbodies all over the country are the main reasons for developing this method.