Changes in the Seminiferous Epithelium of the Testes during Postnatal Development in Assam Goat.

Anatomy research international Pub Date : 2012-01-01 Epub Date: 2012-02-14 DOI:10.1155/2012/620924

Kamal Sarma, J Devi

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引用次数: 10

Abstract

The present work is conducted to elucidate the postnatal development of the seminiferous epithelium of the testes of the Assam goats from 0 day to 10 months of age. A total of eighteen Assam goats divided into six age groups, namely, group-I (0-day), group-II (2 months), group-III (4 months), group-IV (6 months), group-V (8 months), and group-VI (10 months), consisting of 3 animals in each group were used in this study. The seminiferous tubules did not have lumina up to the age of 2 months, hence called the sex cords, and these contained centrally placed gonocytes and peripherally located sustentacular cells. Initiation of spermatogenesis started in 4-month old kids. Luminization process was completed by 6 months of age with all the seminiferous tubuyes having well-developed lumina at this age. These seminiferous tubules contained all the spermatogenic cells of the adult testis. Onset of puberty was observed to be established at 6 months of age in the Assam goats as evidenced by presence of spermatozoa adhering to the adluminal border of the Sertoli cells as well as in the tubular lumen. The histomorphology of various cells of the seminiferous epithelium has been described.

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阿萨姆山羊出生后发育过程中睾丸精系上皮的变化。

本研究旨在阐明0日龄至10个月龄阿萨姆山羊睾丸精系上皮的发育过程。试验选用18只阿萨姆山羊，分为6个年龄组，即i组(0天)、ii组(2个月)、iii组(4个月)、iv组(6个月)、v组(8个月)和vi组(10个月)，每组3只。在2个月大之前，精小管没有腔隙，因此称为性索，其中包含位于中央的性腺细胞和位于周围的支撑细胞。精子发生开始于4个月大的孩子。发光过程在6个月大时完成，所有精管在这个年龄都有发育良好的管腔。这些精小管包含了成年睾丸的所有生精细胞。观察到阿萨姆山羊的青春期开始于6个月大，精子附着在支持细胞的腔内边界以及管状管腔中。已描述了精原上皮各种细胞的组织形态学。

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Anatomy research international

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