Impacts of extremely low-frequency electromagnetic fields (۵۰-Hz) on growth performance and survival rate of common carp, Cyprinus carpio fingerlings

All organisms are probably exposed to different types of electromagnetic fields (EMFs). This study is an attempt to evaluate the effect of extremely low-frequency EMFs (۵۰ Hz) on some growth parameters and survival rate of common carp fingerling. The fry (n = ۱۲۰, averaged ۱۶.۷۶ ± ۰.۸۸ g in initial weight) was exposed to ELF-EMF at four intensities of ۰.۱, ۰.۵, ۱ and ۲ mT only once for ۲ h and then reared for ۶۰ days. The obtained results revealed that all growth indices were significantly (p < ۰.۰۵) improved by increasing in the EMFs intensity. ۲ mT treatment indicated the highest final weight (۴۳.۹۵ ± ۰.۲۷ g), weight gain (۶.۸۳ ± ۰.۱۰ g), weight gain rate (۲۰.۹۴ ± ۰.۱۳ %), daily growth rate (۰.۳۸ ± ۰.۰۰ g day-۱), specific growth rate (۱.۲۶ ± ۰.۰۱ % day-۱) and the lowest food conversion ratio (p < ۰.۰۵). Survival rate had significantly (p < ۰.۰۵) increased in all exposed treatments compared to the control group. In co

کلیدواژه ها:

Electromagnetic fields ، Cyprinus carpio ، Growth ، Survival