Collection and Liquefaction of Guinea Pig Semen.

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Abstract
A method and an apparatus for routine electroejaculation of guinea pigs were developed, the semen coagulum or "vaginal plug" examined, and the coagulation process described. A series of proteolytic enzymes was tried for their liquefying activity; 01% chymotrypsin resulted in consistent liquefaction and good sperm motility. Mean ejaculate volume was 0.5 ml and mean motility at 39[degree] C was 51%. There was no evidence of gross morphological or histological changes in the reproductive system of guinea pigs electroejaculated at biweekly intervals.
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