Effects of extremely low frequency alternating-current magnetic fields on the growth performance and digestive enzyme activity of tilapia Oreochromis niloticus

" The activities of pepsin and intestinal protease of tilapia were significantly decreased after exposure in certain intensities of ELF-MF, but recovered when the ELF-MF exposure was removed 20 days later. Similar effects were also observed in the growth parameters, moreover interestingly, the specific growth rate (SGR) even represented a compensatory growth."