Hostname: page-component-76fb5796d-dfsvx Total loading time: 0 Render date: 2024-04-27T12:09:49.441Z Has data issue: false hasContentIssue false
  • English
  • Français

Polyspermy of pig ova

Published online by Cambridge University Press:  01 September 1959

J. L. Hancock
J. L. Hancock
Affiliation:
A.R.C. Animal Breeding Research Organisation, Edinburgh, 9
Get access

Extract

Of 168 pronucleate ova recovered from sows killed at varying intervals after mating (0, 24, 30 and 48 hours), 20 showed more than 2 pronuclei; 19 of these were recovered from sows in which mating was delayed until 30 to 48 hours after the onset of heat. Evidence is presented that polyspermic fertilisation is responsible for the appearance of ova with more than 2 pronuclei. It is concluded that delayed mating increases the frequency of polyspermic fertilisation in pigs and this might be a source of embryonic mortality in pigs inseminated artificially.

Type
Research Article
Information
Animal Production , Volume 1 , Issue 2 , September 1959 , pp. 103 - 106
Copyright
Copyright © British Society of Animal Science 1959

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Austin, C., 1955. Polyspermy after induced hyperthermia in rats. Nature (Lond.), 175: 1038.CrossRefGoogle ScholarPubMed
Austin, C., & Braden, A. H., 1953. An investigation of polyspermy in the rat and rabbit. Aust. J. biol. Sci., 6: 674.CrossRefGoogle Scholar
Austin, C., & Braden, A. H., 1954. Induction and inhibition of the second polar division in the rat egg and subsequent fertilization. Aust. J. biol. Sci., 7: 195.CrossRefGoogle ScholarPubMed
Austin, C., & Braden, A. H., 1956. Early reactions of the rodent egg to spermatozoon penetration. J. exp. Biol., 53: 358.CrossRefGoogle Scholar
Braden, A. H., & Austin, C., 1954. Fertilization of the mouse egg and the effect of delayed coitus. Aust. J. biol. Sci., 7: 552.CrossRefGoogle ScholarPubMed
Burger, J., 1952. Sex physiology of pigs. Onderstepoort J. vet. Res., Suppl. No. 2.Google Scholar
Fischberg, M., & Beatty, R., 1952. Heteroploidy in mammals. II. Induction of triploidy in pre-implantation mouse eggs. J. Genet., 50: 455.CrossRefGoogle Scholar
Hancock, J., 1958. The examination of pig ova. Vet. Rec., 70: 1200.Google Scholar
Pitkjanen, I., 1955. [Ovulation, fertilization and the early stages of embryonic development in pigs.] Izv. Akad. Nauk SSSR, Ser. biol., 1955 (3), 120.Google Scholar