title: Non-surgical sterilisation of rams using a sclerosing agent.
abstract: Injection of 0.25 ml of a solution of 3.6% formaldehyde in 90% ethanol direct into the caudae epididymides caused sterility in the rams treated. No live sperm were seen in ejaculates collected 35, 57, 91 and 196 days post-injection. The rams retained their libido and were mated to ewes between 2 and 3 months post-injection with no pregnancy ensuing. The technique offers a simple, safe, quick and effective method of sterilising rams. Attempts to produce sterilisation by injection of the sclerosing agent into the vas deferens were not successful.
mesh_terms: D000818:Animals; D004822:Epididymis; D005557:Formaldehyde / Q000008:administration & dosage; D007267:Injections; D008297:Male; D012597:Sclerosing Solutions / Q000008:administration & dosage*; D012661:Semen / Q000166:cytology; D012756:Sheep / Q000502:physiology*; D013094:Spermatozoa / Q000166:cytology; D013245:Sterilization, Reproductive / Q000379:methods / Q000662:veterinary*
chemical_list: D012597:Sclerosing Solutions; D005557:Formaldehyde