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阿萨姆山羊出生后发育过程中睾丸生精上皮的变化

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

作者信息

Sarma Kamal, Devi J

机构信息

Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, R.S. Pura, 181 102, India.

出版信息

Anat Res Int. 2012;2012:620924. doi: 10.1155/2012/620924. Epub 2012 Feb 14.

DOI:10.1155/2012/620924
PMID:22567313
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3335638/
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.

摘要

本研究旨在阐明阿萨姆山羊从出生0天到10个月大时睾丸生精上皮的出生后发育情况。总共18只阿萨姆山羊被分为六个年龄组，即第一组（0天）、第二组（2个月）、第三组（4个月）、第四组（6个月）、第五组（8个月）和第六组（10个月），每组3只动物用于本研究。在2个月龄之前，生精小管没有管腔，因此被称为性索，其中含有位于中央的生殖细胞和位于外周的支持细胞。精子发生始于4个月大的幼羊。到6个月龄时，管腔形成过程完成，此时所有生精小管都有发育良好的管腔。这些生精小管包含成年睾丸的所有生精细胞。在阿萨姆山羊中，6个月龄时观察到青春期开始，证据是精子附着在支持细胞的近腔边界以及管腔内。本文描述了生精上皮各种细胞的组织形态学。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/63432a8907ca/ARI2012-620924.010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/39ce2cd1e358/ARI2012-620924.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/c7a211fa0b5c/ARI2012-620924.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/e9a70cee49d1/ARI2012-620924.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/c4f5e84ddd92/ARI2012-620924.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/cc363abff760/ARI2012-620924.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/15aae98337a3/ARI2012-620924.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/a5f85ef2eba3/ARI2012-620924.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/aa6b8dd5619f/ARI2012-620924.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/5557ec981f6b/ARI2012-620924.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/63432a8907ca/ARI2012-620924.010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/39ce2cd1e358/ARI2012-620924.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/c7a211fa0b5c/ARI2012-620924.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/e9a70cee49d1/ARI2012-620924.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/c4f5e84ddd92/ARI2012-620924.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/cc363abff760/ARI2012-620924.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/15aae98337a3/ARI2012-620924.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/a5f85ef2eba3/ARI2012-620924.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/aa6b8dd5619f/ARI2012-620924.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/5557ec981f6b/ARI2012-620924.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06b2/3335638/63432a8907ca/ARI2012-620924.010.jpg

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The postnatal development of the reproductive organs in bulls with special reference to puberty (incluing growth of the hypophysis and the adrenals).公牛生殖器官的产后发育，特别涉及青春期（包括垂体和肾上腺的生长）。
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