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. 1977 Jan;11(1):53-5.
doi: 10.1258/002367777780959148.

Vaginal impedance measurement used for mating in the rat

L Bartos

Vaginal impedance measurement used for mating in the rat

L Bartos. Lab Anim. 1977 Jan.

Abstract

An apparatus consisting of 2 silver ring electrodes attached to a plastic rod and connected to a transistor indicator was used to measure electrical impedance changes in the vagina of rats. A statistically significant increase in electrical impedance occurred at proestrus. By determining when this peak occurs, the optimal time for pairing can be established. In paired animals the absence of the peak provides a reliable means of diagnosing pregnancy.

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