Authors
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
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