Basrah Journal of Veterinary Research

THE CYCLE EVENT OF SPERMATOGENESIS AND SPERMIOGENESIS IN THE TESTES OF INDIGENOUS DUCK (ANAS PLATYRHYNCHOS)

Authors

Kadhem
A.Z
https://doi.org/10.33762/bvetr.2014.98787
Abstract
Morphologically,the testes of adult duck was suspended by mesorchium with
the roof of the the abdominal cavity. The testes appear as elongated bean shaped and
situated asymmetrically. The mean average of the testis was 1,48 cm in length,
0.47cm in width, and 1.54gm in weight.
Histologically, each testis was covered by a connective tissue capsule.The
stroma of the testis posses no mediastinum. Leydic cells were commonly found in
groups within the connective tissue which filled the spaces between the seminiferous
tubules. Germ cells and Sertoli cells constituent the main component of the
seminiferous epithelium. There were type A-spermatogonia, type I-spermatogonia,
and type B-spermatogonia. Type B-spermatogonia passes through proleptoten,
leptotene, zygotene, pachytene, diplotene, and diakineses. The primary spermatocytes
give rise to secondary spermatocytes. These latter cells enter the second meiotic
division to form the spermatids which undergo through thirteenth stages to form the
sperms.

Keywords

spermatogonia
Testis
Sertoli cells
Basrah Journal of Veterinary Research
Volume 13, Issue 2
Autumn 2014
Page 16-22

  • Receive Date 01 December 2014
  • Revise Date 20 December 2014
  • Accept Date 25 December 2014
  • Publish Date 28 December 2014

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