Breeding Profiles at the Periparturient Stage in Captive Red Foxes () Mating Naturally or Subjected to Artificial Insemination in Japan.

Introduction: Breeding profiles at the periparturient stage in red foxes which mated naturally or were subjected to artificial insemination were retrospectively surveyed using 130 vixens during their reproductive seasons of 2012-2017 in Japan.

Material And Methods: Natural mating vixens were encouraged a maximum of three times with the same male, while artificial insemination was conducted using frozen-thawed semen with the bovine semen extender as a diluent.

Results: With natural mating, conception rates after one, two, and three copulations were 55.

Collection and frozen storage of semen for artificial insemination in red foxes (Vulpes vulpes).

This study was conducted on red foxes to determine the appropriate voltage in electroejaculation for semen collection from stud males, and to confirm whether frozen semen with bovine semen extender can be used for artificial insemination. The proper load voltage for electroejaculation was 3-4 V based on semen collection rates and concentrations of spermatozoa. Frozen semen was prepared according to the known procedure for cows.