caa a22 4500 606226931 CHVBK 20210128101155.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10641-014-0263-6 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0263-6 Effects of extremely low frequency alternating-current magnetic fields on the growth performance and digestive enzyme activity of tilapia Oreochromis niloticus [Elektronische Daten] [Ying Li, Bixiao Ru, Xingfa Liu, Wei Miao, Kai Zhang, Lili Han, Haijun Ni, Hongjuan Wu] Extremely low frequency magnetic field (ELF-MF), as a ubiquitous ecophysiological factor, has been determined to influence the health of human and animals worldwide. In this study, we focused on the effects of ELF-MF on growth performance and digestive enzyme activity in juvenile tilapia, Oreochromis niloticus. Totally 450 fish were exposed to ELF-MF (50Hz; 0, 30, 100, 150 and 200μT) for 30days, respectively. The effects on growth and digestion were monitored on the 10th, 20th, and 30th day after induction (immediate effect), as well as 20th day after cessation of exposure (delayed effect). 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 20days later. Similar effects were also observed in the growth parameters, moreover interestingly, the specific growth rate (SGR) even represented a compensatory growth. To our knowledge, the present research provides the first determination that a certain extent of ELF-MF exposure could inhibit the growth and digestion of fish, and cause compensatory restorations after being removed upon a time. Springer Science+Business Media Dordrecht, 2014 Tilapia larvae nationallicence Extremely low frequency magnetic field nationallicence Growth performance nationallicence Digestive enzyme activity nationallicence Li Ying School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut Ru Bixiao School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut Liu Xingfa China Electric Power Research Institute, 430074, Wuhan, Hubei, China aut Miao Wei School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut Zhang Kai School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut Han Lili School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut Ni Haijun School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut Wu Hongjuan School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 337-343 0378-1909 98:1<337 2015 98 10641 https://doi.org/10.1007/s10641-014-0263-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0263-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Ying School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Ru Bixiao School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Liu Xingfa China Electric Power Research Institute, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Miao Wei School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Zhang Kai School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Han Lili School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Ni Haijun School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Wu Hongjuan School of Environmental Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 337-343 0378-1909 98:1<337 2015 98 10641