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Boar sperm cryosurvival is better after exposure to seminal plasma from selected fractions than to those from entire ejaculate
University of Murcia, Spain.
University of Murcia, Spain.
University of Murcia, Spain.
University of Murcia, Spain.
Vise andre og tillknytning
2014 (engelsk)Inngår i: Cryobiology, ISSN 0011-2240, E-ISSN 1090-2392, Vol. 69, nr 2, s. 203-210Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Boar bulk ejaculates are now being collected instead of usual sperm-rich fractions (SRF) for artificial insemination purpose. The present study evaluated the influence of holding boar sperm samples before freezing surrounded in their own seminal plasma (SP), from either fractions/portions or the entire ejaculate, on post-thawing sperm quality and functionality. Ejaculates collected as bulk (BE) or as separate (first 10 mL of SRF [P1] and rest of SRF [P2]) from 10 boars were held 24 h at 15-17 degrees C and then frozen. Some bulk ejaculate samples were frozen immediately after collections as Control. In addition, epididymal sperm samples from the same 10 boars were collected post-mortem and extended in SP from P1 (EP1), P2 (EP2) and post SRF (EP3), and also held 24 h before freezing for a better understanding of the influence of SP on boar sperm cryopreservation. The sperm quality (motility, evaluated by CASA, and viability, evaluated by flow cytometry) and functionality (flow cytometry assessment of plasma membrane fluidity, mitochondrial membrane potential and intracellular generation of reactive oxygen species [ROS] in viable sperm) were evaluated at 30, 150 and 300 min post-thaw. Post-thawing sperm quality and functionality of P1 and P2 were similar but higher (p less than0.01) than BE samples. Control samples showed higher (p less than 0.01) post-thaw sperm quality and functionality than BE samples. Post-thawing sperm quality and functionality of EP1 and EP2 were similar but higher (p less than 0.05) than EP3. These results showed that boar sperm from BE are more cryosensitive than those from the SRF, particularly when held 24 h before freezing, which would be attributable to the cryonegative effects exerted by the SP from post SRF.

sted, utgiver, år, opplag, sider
Elsevier , 2014. Vol. 69, nr 2, s. 203-210
Emneord [en]
Ejaculate; Epididymis; Sperm; Seminal plasma; Porcine
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-111747DOI: 10.1016/j.cryobiol.2014.07.004ISI: 000342653600001OAI: oai:DiVA.org:liu-111747DiVA, id: diva2:759791
Merknad

Funding Agencies|Ministry of Economy and Competitiveness of Spain; European Regional Development Fund [AGL2012-39903]; Swedish Research Council Formas [2011-512]; Science Without Borders program (Brazilian Scientific Mobility Program at CNPq/MCT); Seneca Foundation (Murcia, Spain); Ministry of Education, Culture and Sport of Spain

Tilgjengelig fra: 2014-10-31 Laget: 2014-10-31 Sist oppdatert: 2018-03-07

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