数字农科院2.0

Comparative studies on testicular and epididymal morphology, and serum hormone concentrations in foxes and the hybrids during the breeding season

文献类型： 外文期刊

作者： Yang, T. A.;Yang, Y. H.;Peng, Y. H.;Cong, B.;Diao, Y. F.;Sao, K.;Hu, P. F.;Song, X. C.;Liu, L. L.;Yang, Y. F.;Xing, X. M.;Yang, F. H.

作者机构：

关键词： Silver fox;Blue fox;Hybrids;Testis;Serum hormone concentrations

期刊名称： ANIMAL REPRODUCTION SCIENCE

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年卷期：

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收录情况： SCI

摘要： The silver fox and the blue fox belong to different genera, and the hybrid males are fully or partially sterile. In the present study, the objective was to evaluate the causes of hybrid male sterility, and therefore analyze the differences in testicular, and epididymal morphology and serum hormone concentrations among silver foxes, blue foxes, and the hybrids during the breeding season. Samples were collected from 20 male silver foxes, 20 male blue foxes, 15 male HSBs (silver fox female x blue fox male hybrids) and 14 male HBSs (blue fox male x silver fox female hybrids), respectively. Seminal evaluation showed large numbers of sperm present in the semen of blue foxes and silver foxes, but no sperm present in the hybrids. Mean testicular volume and the diameter of seminiferous tubules in silver foxes and blue foxes were greater than in the hybrids; and there were many Sertoli cells, spermatogenic cells, and sperm in silver foxes and blue foxes, while spermatogenic cells decreased with no sperm in the hybrids. Mean serum LH and prolactin concentrations in silver foxes and blue foxes were less and testosterone was greater than in the hybrids (P < 0.05). The results indicate that germ cell meioses in the hybrids were arrested at the prophase stage of meiosis, and that lesser concentrations of testosterone and greater concentrations of LH and prolactin can inhibit the completion of spermatogenesis. (C) 2016 Elsevier B.V. All rights reserved.

分类号： Q95

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