COMPARATIVE STUDY ON THE MORPHOLOGY AND HISTOLOGY OF TESTIS AND EPIDIDYMIS OF SLOTH BEAR (melursus ursinus) AND DOG
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Date
2018-07
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KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR
Abstract
The comparative study of morphology and histology of testis and epididymis in
sloth bear and nondescript dog was conducted. Morphologically significant difference
were recorded between testes of sloth bears and nondescript dogs. Histologically, tunica
albuginia of sloth bears was thicker, having multiple muscular layers and dense fibrous
connective tissue. Seminiferous tubules of sloth bear were more convoluted, whereas
interstitial tissue between seminiferous tubules was more in nondescript dog, which were
sorrounded by layers of contractile cells. Seminiferous tubules showed sertoli cells and
adjacent spermatogonia cells were lined basally. Primary spermatocytes were larger than
spermatogonia cells and towards the lumen spermatids were seen in sloth bears and
nondescript dogs. The amount of reticul