Peer-reviewed veterinary case report
Transport and Distribution of Spermatozoa in the Pseudopregnant Rabbit
- Journal:
- American Journal of Veterinary Research
- Year:
- 1970
- Authors:
- Dobrowolski, W. & Hafez, E. S. E.
- Affiliation:
- From the Department of Gynecology-Obstetrics and the Department of Physiology-Pharmacology, School of Medicine, Wayne State University, Detroit, Mich. 48201.
- Species:
- rabbit
Abstract
SUMMARY Rabbits were inseminated on the 1st, 3rd, 5th, or 7th days of pseudopregnancy with 300 × 106 spermatozoa and were necropsied 8 hours later. During the first 3 days of pseudopregnancy, sperm transport and distribution of spermatozoa were similar to that in animals in estrus. Sperm transport was inhibited on 5th day of pseudopregnancy. On the 7th day, spermatozoa were not found in the uterus, uterotubal junction, or oviduct. Mechanisms which may inhibit sperm transport during pseudopregnancy are high titers of progesterone, decreased contraction of uterine and oviductal musculature, changes in cervical mucus, and active phagocytosis in uterus.
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Search related cases →Original publication: https://doi.org/10.2460/ajvr.1970.31.12.2243