Assessment of field fertility and several in vitro sperm characteristics following the use of different Angus sires in a timed-AI program with suckled Nelore cows

Página do item simplificado
dc.contributor.authorOliveira, Leticia Zoccolaro [UNESP]
dc.contributor.authorde Arruda, Rubens Paes
dc.contributor.authorCesar de Andrade, Andre Furugen
dc.contributor.authorCarvalho Celeghini, Eneiva Carla
dc.contributor.authordos Santos, Ricarda Maria
dc.contributor.authorBeletti, Marcelo Emilio
dc.contributor.authorGuimaraes Peres, Rogerio Fonseca
dc.contributor.authorOliveira, Clara Slade [UNESP]
dc.contributor.authorMartins Hossepian de Lima, Vera Fernanda [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal de Uberlândia (UFU)
dc.contributor.institutionAgropecuaria Fazenda Brasil AFB
dc.date.accessioned2014-05-20T13:15:29Z
dc.date.available2014-05-20T13:15:29Z
dc.date.issued2012-06-01
dc.description.abstractIn order to provide information that may help researchers to understand the main cause(s) of differences in bull fertility frequently observed in field trials, this study aimed to investigate conception rates as well as several in vitro sperm characteristics of different sires of unknown fertility utilized in a Timed-AI (TAI) program. Suckled Nelore cows submitted to the same TAI protocol were allocated into eight breeding groups of approximately 120 animals each. Frozen semen doses from three Angus bulls and three different batches from each bull were utilized. Approximately 100 doses from each batch were used in TAI. Sires, batches and AI technicians were equally distributed across breeding groups. Cows were examined for pregnancy diagnosis 40 d after TAI. For in vitro sperm analyses, the same thawing procedure was repeated in the laboratory to mimic field conditions. The following in vitro sperm characteristics were assessed: computerized motility, thermal resistance, plasma and acrosomal membrane integrity, lipid peroxidation, morphology, morphometry and chromatin structure. No effect of breeding group, body condition score, AI technician and sire was observed. However, some significant differences among bulls were detected in laboratory analyses. Semen from sire presenting numerically lower (P > 0.05) pregnancy/AI also presented lower (P < 0.05) values in all sperm characteristics analyzed in thermal resistance test at 4 h (Total Motility, Progressive Motility, Average Path Velocity, Straight-Line Velocity, Curvilinear Velocity, Amplitude of Lateral Head Displacement, Beat Cross Frequency, Straightness, Linearity, and Percentage of Rapidly Moving Cells), higher (P < 0.05) Major and Total Defects in sperm morphological test, lower (P < 0.05) Length, Ellipticity and Fourier parameter (Fourier 0) in sperm morphometric analysis as well as higher (P < 0.05) chromatin heterogeneity. It was concluded that, although no bull effect was observed in the field experiment, the sire that presented numerically lower pregnancy/AI also presented lower semen quality according to the laboratory analyses performed. (C) 2012 Elsevier B.V. All rights reserved.en
dc.description.affiliationSão Paulo State Univ UNESP, Sch Agr Sci & Vet Med, Dept Prevent Vet Med & Anim Reprod, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUniv São Paulo, Sch Vet Med & Anim Sci, Dept Anim Reprod, BR-13630000 Pirassununga, SP, Brazil
dc.description.affiliationFed Univ Uberlandia UFU, Sch Vet Med FAMEV, BR-38400902 Uberlandia, MG, Brazil
dc.description.affiliationAgropecuaria Fazenda Brasil AFB, BR-78690000 Nova Xavantina, MT, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Sch Agr Sci & Vet Med, Dept Prevent Vet Med & Anim Reprod, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent38-46
dc.identifierhttp://dx.doi.org/10.1016/j.livsci.2012.02.018
dc.identifier.citationLivestock Science. Amsterdam: Elsevier B.V., v. 146, n. 1, p. 38-46, 2012.
dc.identifier.doi10.1016/j.livsci.2012.02.018
dc.identifier.fileWOS000303971800006.pdf
dc.identifier.issn1871-1413
dc.identifier.urihttp://hdl.handle.net/11449/2616
dc.identifier.wosWOS:000303971800006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofLivestock Science
dc.relation.ispartofjcr1.204
dc.relation.ispartofsjr0,730
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectBull fertilityen
dc.subjectConception rateen
dc.subjectTimed AIen
dc.subjectSperm characteristicsen
dc.titleAssessment of field fertility and several in vitro sperm characteristics following the use of different Angus sires in a timed-AI program with suckled Nelore cowsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0001-6660-9191[8]
unesp.author.orcid0000-0002-0148-4372[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
WOS000303971800006.pdf
Tamanho:
205.91 KB
Formato:
Adobe Portable Document Format
Baixar
Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Medicina Veterinária Preventiva e Reprodução Animal - FCAV