Exposure of C57BL/6J male mice to an electric field improves copulation rates with superovulated females |
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Authors: | Hori Takuya Yamsaard Thicomeporn Ueta Yoshiko Yanagimoto Harakawa Shinji Kaneko Etsushi Miyamoto Akio Xuan Xuenan Toyoda Yutaka Suzuki Hiroshi |
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Institution: | Research Unit for Functional Genomics, National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Japan. |
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Abstract: | It is well-known that there are considerable strain differences in the relative copulation rates between male and superovulated female mice. In particular, the C57BL/6J strain of mice has a lower rate of successful copulation. We examined the effect of exposure to an electric field on sexual behavior in C57BL/6J male mice. When C57BL/6J males were exposed to a 50 Hz, 45 kV/m electric field for 30 min per day for 11 days and placed in a cage with a superovulated female of the same strain, the successful copulation rates of males was significantly improved compared with unexposed males (P<0.05). These results suggest that the exposure of C57BL/6J male mice to an electric field improves their sub-fertility activity in mating with superovulated females. |
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