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.
30 male C57BL/6J mice were exposed. Data were compared to copulation rates of male ICR mice.
|Setup||The electric field exposure system consisted of a constant voltage unit, a voltage controller, a high voltage transformer unit, and cylindrical plastic exposure cages (diameter 200 mm, height 200 mm) with two stainless steel electrodes (400 x 400 mm) placed over and under them.|
|electric field strength||45 kV/m||-||-||-||-|
The successful copulation rates of exposed C57BL/6J males was significantly improved compared with unexposed males.
These findings indicate that the exposure of C57BL/6J male mice to an electric field improves their sub-fertility activity in mating with superovulated females.