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Species differences in fertility after artificial insemination with frozen semen in fox pure breeding.

Author(s) : FARSTAD W. K., FOUGNER J. A., ANDERSEN BERG K.

Type of article: Article

Summary

For silver foxes, the results with frozen semen are comparable with those obtained for artificial insemination with fresh semen. Artificial intrauterine insemination of 70 (1990) and 52 (1991) blue fox vixens with frozen blue fox semen resulted in low (33 and 48%) conception rates and mean litter sizes of only 2.3 and 5.8 cubs born per litter, respectively. Electron microscopical studies of post-thaw acrosome integrity of spermatozoa from blue and silver foxes did not reveal any differences between the two species in the severity of prevalence of acrosomal damage. Conclusively, differences are observed between the two fox species in fertility of semen frozen by the same freezing method, but studies of post-thaw acrosome integrity of the spermatozoa or other semen parameters studied by means of light-or electron microscopy could not explain the differences in fertility results.

Details

  • Original title: Species differences in fertility after artificial insemination with frozen semen in fox pure breeding.
  • Record ID : 1993-1137
  • Languages: English
  • Source: Nor. J. agric. Sci. - suppl. n. 9
  • Publication date: 1992
  • Document available for consultation in the library of the IIR headquarters only.

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