Fatores de correção do perímetro escrotal para efeitos de idade e peso ao sobreano de tourinhos nelore

dc.contributor.authorDal-Farra, Rossano André
dc.contributor.authorFries, Luiz Alberto [UNESP]
dc.contributor.authorLobato, José Fernando Piva
dc.contributor.institutionULBRA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionProfessor Adjunto IV
dc.date.accessioned2014-05-27T11:19:37Z
dc.date.available2014-05-27T11:19:37Z
dc.date.issued1998-11-01
dc.description.abstractThe aim of the study was to estimate adjustment factors to be used in genetic selection programs. Measurement data of scrotal circumference Nellore breed bulls from different herds raised on Brazilian tropical pasture conditions, totalizing 8934 animals of the 346 contemporary groups (CG) were analyzed. The means and standard deviations of real scrotal circumference (PEREAL), age at yearling weight (ISOB) and yearling weight adjusted to 550 days (PPD550), and age-of-dam were, respectively: 28.44 ± 3.35 cm; 589.04 ± 42.66 days; 333.03 ± 36.25 kg and 5.84 ± 3.01 years. The segmented polynomials (Spline functions) were used to estimate the adjustment factors for age and yearling weight, being used 550 days and 330 kg for age and weight, respectively, as standard values. Anticipation scrotal circumference measurements for 520-550 days could increase the selection efficiency for sexual precocity.en
dc.description.affiliationProf. do Curso de Med. Vet. Universidade Luterana do Brasil ULBRA, Canoas, RS
dc.description.affiliationGenSys Consultores Associados S/C L. FCAV/UNESP/Jaboticabal-FAPESP
dc.description.affiliationProfessor Adjunto IV Departamento de Zootecnia/UFRGS, Caixa Postal 776, 90001-970 - Porto Alegre, RS
dc.description.affiliationUnespGenSys Consultores Associados S/C L. FCAV/UNESP/Jaboticabal-FAPESP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent1092-1096
dc.identifierhttp://www.revista.sbz.org.br/artigo/index.php?artigo=2024
dc.identifier.citationRevista Brasileira de Zootecnia, v. 27, n. 6, p. 1092-1096, 1998.
dc.identifier.file2-s2.0-0347204753.pdf
dc.identifier.issn0100-4859
dc.identifier.scopus2-s2.0-0347204753
dc.identifier.urihttp://hdl.handle.net/11449/65547
dc.language.isopor
dc.relation.ispartofRevista Brasileira de Zootecnia
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectScrotal circumference to weight ratio
dc.subjectSegmented polynomials
dc.subjectSexual precocity
dc.subjectSpline functions
dc.subjectAnimalia
dc.titleFatores de correção do perímetro escrotal para efeitos de idade e peso ao sobreano de tourinhos nelorept
dc.title.alternativeAdjustment factors of scrotal circumference for age and yearling weight effects of young nelore bullsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbz/paboutj.htm#003
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentZootecnia - FCAVpt

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