Effect of Hemiorchidectomy on Spermiogram and Testicular Characteristics of West African Dwarf Ram.

Eight healthy west African dwarf rams aged between 1.5 and 2.5 years weighing between 13 and 18 kg were assigned randomly into groups for right and left testicular orchidectomy. The Hemi-orchiidectomy was performed after three weeks of quarantine and testicular characteristics of excised testes examined. Thereafter, for a period of seven weeks, spermiograms were studied and recorded after which intact testes were removed and responsiveness to hemiorchidectomy studied. Basal spermiogram, gotten from all the animals before hemiorchidectomy served as control while comparison were made between testes removed during hemiorchidectomy and the intact testis removed thereafter. Compensatory hypertrophy was observed in all the animals after the procedure in the two groups. However this compensation was not of significant variation comparing animals assigned to left testicular orchidectomy with those for right testicular orchidectomy, (p hence their recommendation for use in the event of accidental loss, irreversible atrophy or degeneration of a single testis. Key words : Hemiorchidectomy, Spermiogram, Testicular Characteristics, West African Dwarf, Ram. Huit beliers nains d’Afrique de l’Ouest en bonne sante d’âge variant entre 1,5 et 2,5 ans et pesant entre 13 et 18 kg, ont ete repartis au hasard en groupes pour une orchidectomie des testicules droit et gauche. L’hemiorchidectomie a ete realisee apres trois semaines de quarantaine et les caracteristiques des testicules excises ont ete examines. Sur une periode de sept semaines, les spermogrammes ont ete par la suite enregistres et etudies ; apres quoi les testicules intacts ont ete enleves et leur reactivite aux hemiorchidectomies etudiee. Le spermogramme de base obtenu a partir de tous les animaux avant hemiorchidectomie a servi de temoin, tandis qu’une comparaison a ete faite entre les testicules enleves pendant l’hemiorchidectomie et le testicule intact qui a ete retire par la suite. L’hypertrophie compensatrice a ete observee chez tous les animaux apres cette procedure dans les deux groupes. Toutefois, cette compensation n’a pas varie de maniere significative en comparant les animaux soumis a l’orchidectomie testiculaire gauche avec ceux de orchidectomie testiculaire droite, (p testicule unique. Mots cles: hemiorchidectomie, spermogramme, testicules, Beliers nains d’Afrique de l’Ouest