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Observations on the survival of stored spermatozoa in the genital tract of the mare

Published online by Cambridge University Press:  27 March 2009

J. A. Laing
Affiliation:
School of Agriculture, Cambridge

Extract

1. Twelve pony mares were inseminated at various intervals (18 days to within 24 hr.) before ovulation with spermatozoa which had been concentrated by centrifugation and stored for 24 hr.

2. Of fourteen inseminations, only two, both within 24 hr. of ovulation, produced pregnancies.

3. The survival time of the stored spermatozoa within the female tract was concluded to be somewhat less than 24 hr.

4. It is suggested that successful inseminations with stored spermatozoa could be made 24 hr. after the injection of prolan.

This work was carried out while holding the Miss Aleen Curt Memorial Veterinary Research Scholarship from the Royal College of Veterinary Surgeons.

My thanks are due to Dr J. Hammond and Dr A. Walton for their help and encouragement and to Mr F. T. Day for the loan of the ponies and for his help and instruction in the technique of examination.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1943

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References

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