Impacts of extremely low-frequency electromagnetic fields (50-Hz) on growth performance and survival rate of common carp, Cyprinus carpio fingerlings
| Autor: | Mohammadi-Zadeh Khoshroo, M., Shamsaie Mehrjan, M., Samiee, F., Soltani, M., Hosseini Shekarabi, S.P. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Caspian Journal of Environmental Sciences, Vol 15, Iss 4, Pp 299-308 (2017) |
| Druh dokumentu: | article |
| ISSN: | 1735-3033 1735-3866 |
| Popis: | 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 (50 Hz) on some growth parameters and survival rate of common carp fingerling. The fish (n = 120, averaged 16.76 ± 0.88 g in initial weight) was exposed to ELF-EMF at four intensities of 0.1, 0.5, 1 and 2 mT only once for 2 h and then reared for 60 days. The obtained results revealed that all growth indices were significantly (p < 0.05) improved by increasing in the EMFs intensity. Two mT treatment indicated the highest final weight (43.95 ± 0.27 g), weight gain (6.83 ± 0.10 g), weight gain rate (20.94 ± 0.13 %), daily growth rate (0.38 ± 0.00 g day-1), specific growth rate (1.26 ± 0.01 % day-1) and the lowest food conversion ratio (p < 0.05). Survival rate significantly (p < 0.05) increased in all exposed treatments compared to the control group. In conclusion, ELF-EMF can enhance the growth indices and survival rate of common carp as one of the most commercially-important cultured fish species over the world. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|