Histomorphological comparisons in testicles between Barb horse, donkey and mule

The mule is a sterile hybrid domestic animal that results from the breeding of male donkey with female horse, understanding reproductive biology these species very critical. goal this paper was to perform comparative and more accurate histomorphometric testicles in Barb donkeys mules. Microscopic examinations histological description were carried on genital tract horses, mules healthy mature; study conducted during April-May 2018. morphological shows similarity between two equine infertile for testicles, epididymis vas deferens. However, difference presented morphometric data; deferens voluminous horse than mule. Moreover, differences significantly higher surface seminiferous tubules epididymis. lumen donkey. Absence gametes epididymal cavity lower number Furthermore, we have noted presence spermatozoa one 16.67%. Therefore, could complete development spermatogenesis.