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metadata.dc.type: article
Title: Evaluation of amides and centrifugation temperature in boar semen cryopreservation
metadata.dc.creator: Bianchi, Ivan
Calderam, Kérlin
Maschio, Éder Francisco
Madeira, Elisângela Mirapalheta
Ulguim, Rafael da Rosa
Corcini, Carine Dahl
Bongalhardo, Denise Calisto
Corrêa, Érico Kunde
Lucia Júnior, Thomaz
Deschamps, João Carlos
Corrêa, Marcio Nunes
Abstract: Two experiments were conducted to evaluate the use of amides as cryoprotectants and two centrifugation temperatures (15 or 24 8C) in boar semen cryopreservation protocols. Semen was diluted in BTS, cooled centrifuged, added to cooling extenders, followed by the addition of various cryoprotectants. In experiment 1, mean ( S.E.M.) sperm motility for 5% dimethylformamide (DMF; 50.6 1.9%) and 5% dimethylacetamide (DMA; 53.8 1.7%) were superior (P < 0.05) to 5% methylformamide (MF;43.2 2.4%) and 3% glycerol (GLY; 38.1 2.3%), with no significant difference between MF and GLY. Sperm membrane integrity was higher (P < 0.05) for DMA than for MF or GLY (50.9 1.9, 43.3 2.5, and 34.5 2.8%, respectively). Sperm membrane integrity was higher in DMF (47.9 2.1%) than in glycerol (34.5 2.8%, P < 0.05), but was similar to other treatments (P > 0.05). In experiment 2, we tested MF, DMF, and DMA at 3, 5, and 7%. Sperm motility and membrane integrity were higher for 5% DMA (53.8 1.7 and 50.9 1.9%) and 5% DMF (50.6 1.9 and 47.9 2.1%), in comparison with 7% DMF and all MF concentrations (P < 0.05). For sperm motility and membrane integrity, 5% DMA exceeded (P < 0.05) 3% DM, with greater membrane integrity than 3% DMF (P < 0.05). In both experiments, sperm motility and membrane integrity were superior at 15 8C versus 24 8C (P < 0.05), with no interaction between centrifugation temperature and treatments (P > 0.05). In conclusion, boar semen was successfully cryopreserved by replacement of glycerol with amides (especially 5% DMA) and centrifugation at 15 8C, with benefits for post-thaw sperm motility and membrane integrity.
Keywords: Amides
Boar semen cryopreservation
Publisher: Elsevier
Citation: BIANCHI, Ivan et al. Evaluation of amides and centrifugation temperature in boar semen cryopreservation. Theriogenology, v. 69, p. 632-638, 2008.
Issue Date: 2008
Appears in Collections:Departamento de Patologia Animal: Artigos de periódicos

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