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Boar seminal plasma inhibits cryo-capacitation of frozen-thawed ram sperm and improves fertility following intracervical insemination
Y. Fang, R. Z. Zhong, X. S. Zhang, J. L. Zhang and D. W. Zhou
2018
Source PublicationTheriogenology
Volume105Pages:84-89
Other AbstractCryopreservation has numerous deleterious effects on sperm structure and function, which can be reduced by adding seminal plasma (SP), either autologous or heterologous. The objective was to determine effects of adding boar SP to the freezing extender on sperm quality, tyrosine phosphorylation and fertilizing ability of frozen-thawed ram sperm. Semen was collected from eight Small-tail Han rams and extended in a glucose-egg yolk buffer supplemented with 0, 20, 40, or 60% porcine SP (from Large white boars). Compared to all other groups, 40% boar SP increased sperm viability and motility (P < 0.05), whereas 20% boar SP had no beneficial effect, and 60% SP reduced sperm quality and motility (P < 0.05). Compared to control (0%), 40% boar SP inhibited cryo-capacitation and tyrosine phosphorylation of frozen-thawed ram sperm, and improved the proportion of capacitated sperm and tyrosine phosphorylation after in vitro capacitation (P < 0.05). Furthermore, based on viscous medium penetration tests, 40% boar SP increased sperm penetration (944.7 +/- 121.5 vs 555.3 +/- 88.7; P < 0.05). Finally, 40% boar SP improved pregnancy rate for intracervical AI (47.5 vs 33.3%; P < 0.05), apparently due to inhibition of cryo-capacitation, although pregnancy rate for intravaginal AI was not affected (31.6 vs 30.0%). (c) 2017 Published by Elsevier Inc. As important representatives of Oribatida (Acari), ptyctimous mites comprise more than 1400 described species in 40 genera and subgenera, with nearly cosmopolitan distribution except for the Arctic and Antarctic Regions. They are capable of folding the aspidosoma under the opisthosoma to protect their appendages, and are primarily soil and litter inhabitants, feeding on fungi and decaying plant remains with various levels of specificity. Our purpose was to provide a detailed catalogue of all known ptyctimous mite species in the world with information of distribution, taxonomic issues and some remarks. Data of known juvenile instars of ptyctimous mites which were not included in Norton & Ermilov (2014) were added. We hope that our catalogue with bibliography will be helpful in taxonomic and ecological studies.
Document Type期刊论文
Identifierhttp://ir.iga.ac.cn/handle/131322/9122
Collection湿地生态系统管理学科组
Recommended Citation
GB/T 7714
Y. Fang, R. Z. Zhong, X. S. Zhang, J. L. Zhang and D. W. Zhou. Boar seminal plasma inhibits cryo-capacitation of frozen-thawed ram sperm and improves fertility following intracervical insemination[J]. Theriogenology,2018,105:84-89.
APA Y. Fang, R. Z. Zhong, X. S. Zhang, J. L. Zhang and D. W. Zhou.(2018).Boar seminal plasma inhibits cryo-capacitation of frozen-thawed ram sperm and improves fertility following intracervical insemination.Theriogenology,105,84-89.
MLA Y. Fang, R. Z. Zhong, X. S. Zhang, J. L. Zhang and D. W. Zhou."Boar seminal plasma inhibits cryo-capacitation of frozen-thawed ram sperm and improves fertility following intracervical insemination".Theriogenology 105(2018):84-89.
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