title: Testicular aspiration biopsy in evaluation of fertility of mink (Mustela vison).
abstract: A 19-gauge needle biopsy was taken of the testis of mink in late January. When scores from 1 to 10 were given according to the developmental stage and number of spermatogenic cells, males scoring 8-10 returned significantly better breeding results than did males having scores less than 7. The biopsy did not affect libido or induce other disturbances of fertility. Fine-needle aspiration biopsy of the testis is possibly the most convenient and accurate infertility assay in mink breeding.
mesh_terms: D000818:Animals; D001707:Biopsy, Needle; D005298:Fertility; D008297:Male; D008907:Mink / Q000502:physiology*; D013737:Testis / Q000166:cytology*