Growth performance, reproductive parameters and fertility measures in young Nellore bulls with divergent feed efficiency

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dc.contributor.authorRossi, Guilherme Fazan [UNESP]
dc.contributor.authorBastos, Natália Marins [UNESP]
dc.contributor.authorVrisman, Dayane Priscila [UNESP]
dc.contributor.authorRodrigues, Naiara Nantes [UNESP]
dc.contributor.authorVantini, Roberta [UNESP]
dc.contributor.authorGarcia, Joaquim Mansano [UNESP]
dc.contributor.authorDias, Erika Aline Ribeiro
dc.contributor.authorSimili, Flávia Fernanda
dc.contributor.authorGuimarães, André Lasmar
dc.contributor.authorCanesin, Roberta Carrilho
dc.contributor.authorMercadante, Maria Eugênia Zerlotti
dc.contributor.authorFreitas-Dell’Aqua, Camila de Paula [UNESP]
dc.contributor.authorde Athayde, Flávia Regina Florencio [UNESP]
dc.contributor.authorMonteiro, Fabio Morato [UNESP]
dc.contributor.authorMingoti, Gisele Zoccal [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionInstituto de Zootecnia
dc.date.accessioned2023-07-29T13:26:21Z
dc.date.available2023-07-29T13:26:21Z
dc.date.issued2022-01-01
dc.description.abstractThe growth, sexual maturity and fertility-related parameters related of young Nellore bulls with divergent residual feed intake (RFI) raised on pasture were evaluated. After classification of 48 young males as low and high RFI (more and less efficient, respectively), the animals were evaluated for growth and reproductive parameters at 28-day intervals from 14.3 to 24.6 months of age. The semen was cryopreserved in the last sampling and fresh and post-thaw semen samples were evaluated. Low RFI bulls exhibited higher initial and final body weight (P < 0.05), but feed intake, body condition score and growth measures evaluated by carcass ultrasound were unaffected by RFI (P > 0.05). The scrotal circumference, sperm concentration, defects, and quality of fresh semen, and ultrasonographic testicular characteristics were unaffected by RFI (P > 0.05). However, velocity parameters such as average path and curvilinear velocities determined by computer-assisted sperm analysis of thawed semen submitted to the rapid thermoresistance test were improved (P < 0.05) in low RFI bulls, but this improvement in quality did not enhance in vitro sperm fertilizing ability. Our results demonstrated significant differences in metabolism and growth performance between bulls of divergent RFI. In addition, there was slight improvement in the semen quality of bulls with low RFI bulls, but this did not enhance in vitro fertilizing ability. Selection of beef bulls for RFI can be performed, which will result in economic benefits by improving the growth performance of the animals without affecting reproductive parameters.en
dc.description.affiliationFaculdade de Ciências Agrárias e Veterinárias Departamento de Radiologia Reprodução e Saúde Única Universidade Estadual Paulista, SP
dc.description.affiliationCentro de Pesquisa de Bovinos de Corte Instituto de Zootecnia, SP
dc.description.affiliationDepartamento de Reprodução Animal e Radiologia Veterinária Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista, SP
dc.description.affiliationDepartamento de Produção e Saúde Animal Faculdade de Medicina Veterinária Universidade Estadual Paulista, SP
dc.description.affiliationUnespFaculdade de Ciências Agrárias e Veterinárias Departamento de Radiologia Reprodução e Saúde Única Universidade Estadual Paulista, SP
dc.description.affiliationUnespDepartamento de Reprodução Animal e Radiologia Veterinária Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista, SP
dc.description.affiliationUnespDepartamento de Produção e Saúde Animal Faculdade de Medicina Veterinária Universidade Estadual Paulista, SP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.identifierhttp://dx.doi.org/10.1590/1984-3143-AR2022-0053
dc.identifier.citationAnimal Reproduction, v. 19, n. 3, 2022.
dc.identifier.doi10.1590/1984-3143-AR2022-0053
dc.identifier.issn1984-3143
dc.identifier.issn1806-9614
dc.identifier.scopus2-s2.0-85140754785
dc.identifier.urihttp://hdl.handle.net/11449/247804
dc.language.isoeng
dc.relation.ispartofAnimal Reproduction
dc.sourceScopus
dc.subjectBovine
dc.subjectEmbryo
dc.subjectMale
dc.subjectResidual feed intake
dc.subjectSemen.
dc.titleGrowth performance, reproductive parameters and fertility measures in young Nellore bulls with divergent feed efficiencyen
dc.typeArtigo
unesp.author.orcid0000-0002-8786-2839[1]
unesp.author.orcid0000-0001-8189-5085[2]
unesp.author.orcid0000-0003-2511-6432[3]
unesp.author.orcid0000-0001-5580-9606[4]
unesp.author.orcid0000-0002-1894-9041[5]
unesp.author.orcid0000-0001-7181-1589[6]
unesp.author.orcid0000-0003-4986-884X[7]
unesp.author.orcid0000-0001-8286-2672[8]
unesp.author.orcid0000-0002-8551-2915[9]
unesp.author.orcid0000-0003-1938-4596[10]
unesp.author.orcid0000-0002-1218-5378[11]
unesp.author.orcid0000-0002-4457-9160[12]
unesp.author.orcid0000-0001-8856-7164[13]
unesp.author.orcid0000-0003-4344-4667 0000-0003-4344-4667[14]
unesp.author.orcid0000-0002-3059-4458 0000-0002-3059-4458[15]

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Artigos - Medicina Veterinária Preventiva e Reprodução Animal - FCAV
Artigos - Reprodução Animal e Radiologia Veterinária - FMVZ