Electronic Monitor for Vaginal Estrous-Cycle in Rats and Mice

Electronic Monitor for Vaginal Estrous-Cycle in Rats and Mice

Producent: 

Measuring the value of electrical impedance of the vagina is a precise method for detecting the optimum day for mating during the 4-day estrous cycle in the rat. With mouse probe you may measure mouse vaginal impednace. See MK-12 Vaginal Impedance Checker.

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Electronic Monitor for Vaginal Estrous-Cycle in Rats and Mice

The MK-12 Vaginal Impedance Checker is designed to obtain precise information to determine the optimum day for mating during the rat estrous cycle.

The electrical impedance of the epithelial cell layer of vaginal mucosa is measured at the frequency of 1 kHz by insertion of the suitable probe into the vagina. Two probes are available, for rats or mice.

In the proestrus stage significantly higher impedance is produced compared to that in the other stages of the estrous cycle. 3KOhm of impedance can be considered a standard for indicating proestrus stage. Measuring range is 0-19.9KOhm.

The Rat Vaginal Impedance Checker is a reliable time and labor-saving device. Operation is so simple a novice can easily use it, while the conventional method (vaginal smear method) is a troublesome procedure requiring skill, time and labor.

The device is automatically calibrated when turning on the power.

NOTE: cable and probe are consumable parts, not included in the warranty coverage.

Application

Suitable for rats and mice. Measuring the value of electrical impedance of the vagina is a precise method for detecting the optimum day for mating during the 4-day estrous cycle in the rat.

There is a relationship between the electrical impedance of the vaginal mucous membrane and mucus and the various phases of the oestral cycle in animals. Daily measurement of the impedance in rats is an easy and rapid method for monitoring oestrus. Being less traumatic than the classical and time-consuming method of vaginal smears, it rarely disturbs the continuity of normal cycles.

Cyclic changes of electrical impedance of vagina (EIV) were studied in the rats. EIV indicated high value (over 3,000 omega) only at proestrus, and it was lower (under 3,000 omega) at other stage of estrous cycle. These results indicates that measuring the EIV made to distinguish proestrus from other phases of estrous cycle. The female caged with male showed high copulation rate when her EIV had been over 3,000 omega.

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