[1. Boue F., Delhomme A., Chaffaux S.: Reproductive management of silver foxes (Vulpes vulpes) in captivity. Theriogenology 2000, 53, 1717–1728.10.1016/S0093-691X(00)00310-1]Search in Google Scholar
[2. Braastad B.O.: Behaviour of silver foxes in traditional breeding boxes and in boxes with an entrance tunnel. Anim Welfare 1996, 5, 155–166.10.1017/S0962728600018583]Search in Google Scholar
[3. Elmeros M., Pedersen V., Wincentz T-L.: Placental scar counts and litter size estimations in ranched red foxes (Vulpes vulpes). Mamm Biol 2003, 68, 391–393.10.1078/1616-5047-00108]Search in Google Scholar
[4. Farstad W.: Reproduction in foxes: current research and future challenges. Anim Reprod Sci 1998, 53, 35–42.10.1016/S0378-4320(98)00125-0]Search in Google Scholar
[5. Fougner J.A.: Artificial insemination in fox breeding. J Reprod Fertil Suppl 1989, 39, 317–323.]Search in Google Scholar
[6. Japanese Association for Laboratory Animal Science: Guidelines for animal experimentation. Exp Anim 1987, 36, 285–288.]Search in Google Scholar
[7. Mondain-Monval M., Dutourne B., Bonnin-Laffargue M., Canivenc R., Scholler R.: Ovarian activity during the anoestrus and the reproductive season of the red fox (Vulpes vulpes L.). J Steroid Biochem 1977, 8, 761–769.10.1016/0022-4731(77)90010-3]Search in Google Scholar
[8. Møller O.M., Mondain-Monval M., Smith A., Metzger E., Scholler R.: Temporal relationships between hormonal concentrations and the electrical resistance of the vaginal tract of blue foxes (Alopex lagopus) at pro-oestrus and oestrus. J Reprod Fertil. 1984, 70, 15–24.10.1530/jrf.0.0700015]Search in Google Scholar
[9. Pyykönen T., Ahola L., Hänninen S., Mononen J.: A note on the reproductive success of primiparous blue fox vixens in social groups. Anim Reprod Sci 2009, 112, 409–414.10.1016/j.anireprosci.2008.05.01018602229]Search in Google Scholar
[10. Pyykönen T., Hänninen S., Mohaibes M., Sepponen J., Mononen J., Ahola L.: The effect of a combination of permanent breeding cage and low housing density on the reproductive success of farmed blue foxes. Anim Reprod Sci 2008, 106, 255–264.10.1016/j.anireprosci.2007.04.01717548176]Search in Google Scholar
[11. Pyykönen T., Mononen J., Ahola L., Rekilä T.: Periparturient behaviour in farmed blue foxes (Alopex lagopus). Appl Anim Behav Sci 2005, 94, 133–147.10.1016/j.applanim.2005.02.008]Search in Google Scholar
[12. Yatu M., Sato M., Kobayashi J., Ichijo T., Satoh H., Oikawa T., Sato S.: Collection and frozen storage of semen for artificial insemination in red foxes (Vulpes vulpes). J Vet Med Sci 2018, 80, 1762–1765.10.1292/jvms.17-0433626182530249927]Search in Google Scholar
[13. Yatu M., Sato T., Kobayashi J., Satoh H., Takahashi T., Izaike Y., Sato S.: Predicting conception in red foxes (Vulpes vulpes) by monitoring vaginal electrical resistance with coital-lock time. Jpn J Vet Res 2018, 66, 215–220.]Search in Google Scholar