| Abstract: | Recently translated studies of the electrical resistance of cervical mucus as a test for the optimum time of insemination of agricultural animals are reviewed. The technique involves the measurement of the electrical conductivity of the surface of the mucosa in the vaginal vestibule. Experiments with cows and sows have shown that pregnancy or fertilization rates are considerably higher when mucosal electrical resistance is low at the time of insemination than when resistance is high. It has also been demonstrated in sows that mucosal resistance is higher in pregnant than in nonpregnant animals. Further research into these results is recommended. |
