Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-35982013000600006 http://hdl.handle.net/11449/75577 |
Resumo: | The objective of the present study was to evaluate the genetic and non-genetic effects that influencevigor at birth and preweaning mortality in Nellore calves. A total of 11,727 records of births that occurred between 1978 and 2006, offspring of 363 sires, were analyzed. Poor calf vigor at birth (VB) and preweaning mortality divided into stillbirth (SB), early mortality (EM) and total mortality (TM) were analyzed as binary variables. Generalized linear models were used for the evaluation of non-genetic effects and generalized linear mixed models for genetic effects (sire and animal models). The incidences were 4.75% for VB, 2.66% for SB, 5.28% for EM, and 7.99% for TM. Birth weight was the effect that most influenced the traits studied. Calves weighing less than 22kg(females) and less than 24kg (males) were at a higher risk of low vigor and preweaning mortality. Preweaning mortality was higher among calves born from cows aged .3 and .11 years at calving compared with cows aged 7 to 10 years. Male calves presented less vigor and higher preweaning mortality than female calves. Selection for postweaning weight did not influence preweaning mortality. The heritability estimates ranged between 0.01 and 0.09 for VB, 0.00 and 0.27 for SB, 0.03 and 0.17 for EM and 0.02 and 0.10 for TM. Stillbirth should be included as a selection criterion in breeding programs of Nellore cattle, alone or as part of a selection index, aiming to reduce preweaning mortality. © 2013 Sociedade Brasileira de Zootecnia. |
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Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calvesAnimal welfareBeef cattleCalf mortalityGenetic improvementRisk factorThe objective of the present study was to evaluate the genetic and non-genetic effects that influencevigor at birth and preweaning mortality in Nellore calves. A total of 11,727 records of births that occurred between 1978 and 2006, offspring of 363 sires, were analyzed. Poor calf vigor at birth (VB) and preweaning mortality divided into stillbirth (SB), early mortality (EM) and total mortality (TM) were analyzed as binary variables. Generalized linear models were used for the evaluation of non-genetic effects and generalized linear mixed models for genetic effects (sire and animal models). The incidences were 4.75% for VB, 2.66% for SB, 5.28% for EM, and 7.99% for TM. Birth weight was the effect that most influenced the traits studied. Calves weighing less than 22kg(females) and less than 24kg (males) were at a higher risk of low vigor and preweaning mortality. Preweaning mortality was higher among calves born from cows aged .3 and .11 years at calving compared with cows aged 7 to 10 years. Male calves presented less vigor and higher preweaning mortality than female calves. Selection for postweaning weight did not influence preweaning mortality. The heritability estimates ranged between 0.01 and 0.09 for VB, 0.00 and 0.27 for SB, 0.03 and 0.17 for EM and 0.02 and 0.10 for TM. Stillbirth should be included as a selection criterion in breeding programs of Nellore cattle, alone or as part of a selection index, aiming to reduce preweaning mortality. © 2013 Sociedade Brasileira de Zootecnia.APTA; Pólo Regional da Alta Mogiana, Colina, SPGrupo ETCO - Grupo de Estudos e Pesquisas em Etologia e Ecologia Animal, Colina, SPDepartamento de Zootecnia FCAV-UNESP, Jaboticabal, SPCentro APTA Bovinos de Corte - IZ/APTA/SAA-SP, Sertãozinho, SPInstituto de Zootecnia, Nova Odessa, SPDepartamento de Zootecnia FCAV-UNESP, Jaboticabal, SPAgência Paulista de Tecnologia dos Agronegócios (APTA)Grupo ETCO - Grupo de Estudos e Pesquisas em Etologia e Ecologia AnimalUniversidade Estadual Paulista (Unesp)Instituto de ZootecniaSchmidek, AnitaRodrigues Paranhosda Costa, Mateus José [UNESP]Zerlotti Mercadante, Maria EugêniaMacedode Toledo, LuciandraGonçalves Cyrillo, Joslaine Noelydos SantosBranco, Renata Helena2014-05-27T11:29:37Z2014-05-27T11:29:37Z2013-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article421-427application/pdfhttp://dx.doi.org/10.1590/S1516-35982013000600006Revista Brasileira de Zootecnia, v. 42, n. 6, p. 421-427, 2013.1516-35981806-9290http://hdl.handle.net/11449/7557710.1590/S1516-35982013000600006S1516-35982013000600006WOS:0003201979000062-s2.0-848807071012-s2.0-84880707101.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Zootecnia0.7350,337info:eu-repo/semantics/openAccess2024-06-07T18:44:29Zoai:repositorio.unesp.br:11449/75577Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:45:39.828866Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves |
title |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves |
spellingShingle |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves Schmidek, Anita Animal welfare Beef cattle Calf mortality Genetic improvement Risk factor |
title_short |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves |
title_full |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves |
title_fullStr |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves |
title_full_unstemmed |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves |
title_sort |
Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in nellore calves |
author |
Schmidek, Anita |
author_facet |
Schmidek, Anita Rodrigues Paranhosda Costa, Mateus José [UNESP] Zerlotti Mercadante, Maria Eugênia Macedode Toledo, Luciandra Gonçalves Cyrillo, Joslaine Noelydos Santos Branco, Renata Helena |
author_role |
author |
author2 |
Rodrigues Paranhosda Costa, Mateus José [UNESP] Zerlotti Mercadante, Maria Eugênia Macedode Toledo, Luciandra Gonçalves Cyrillo, Joslaine Noelydos Santos Branco, Renata Helena |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Agência Paulista de Tecnologia dos Agronegócios (APTA) Grupo ETCO - Grupo de Estudos e Pesquisas em Etologia e Ecologia Animal Universidade Estadual Paulista (Unesp) Instituto de Zootecnia |
dc.contributor.author.fl_str_mv |
Schmidek, Anita Rodrigues Paranhosda Costa, Mateus José [UNESP] Zerlotti Mercadante, Maria Eugênia Macedode Toledo, Luciandra Gonçalves Cyrillo, Joslaine Noelydos Santos Branco, Renata Helena |
dc.subject.por.fl_str_mv |
Animal welfare Beef cattle Calf mortality Genetic improvement Risk factor |
topic |
Animal welfare Beef cattle Calf mortality Genetic improvement Risk factor |
description |
The objective of the present study was to evaluate the genetic and non-genetic effects that influencevigor at birth and preweaning mortality in Nellore calves. A total of 11,727 records of births that occurred between 1978 and 2006, offspring of 363 sires, were analyzed. Poor calf vigor at birth (VB) and preweaning mortality divided into stillbirth (SB), early mortality (EM) and total mortality (TM) were analyzed as binary variables. Generalized linear models were used for the evaluation of non-genetic effects and generalized linear mixed models for genetic effects (sire and animal models). The incidences were 4.75% for VB, 2.66% for SB, 5.28% for EM, and 7.99% for TM. Birth weight was the effect that most influenced the traits studied. Calves weighing less than 22kg(females) and less than 24kg (males) were at a higher risk of low vigor and preweaning mortality. Preweaning mortality was higher among calves born from cows aged .3 and .11 years at calving compared with cows aged 7 to 10 years. Male calves presented less vigor and higher preweaning mortality than female calves. Selection for postweaning weight did not influence preweaning mortality. The heritability estimates ranged between 0.01 and 0.09 for VB, 0.00 and 0.27 for SB, 0.03 and 0.17 for EM and 0.02 and 0.10 for TM. Stillbirth should be included as a selection criterion in breeding programs of Nellore cattle, alone or as part of a selection index, aiming to reduce preweaning mortality. © 2013 Sociedade Brasileira de Zootecnia. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06-01 2014-05-27T11:29:37Z 2014-05-27T11:29:37Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1516-35982013000600006 Revista Brasileira de Zootecnia, v. 42, n. 6, p. 421-427, 2013. 1516-3598 1806-9290 http://hdl.handle.net/11449/75577 10.1590/S1516-35982013000600006 S1516-35982013000600006 WOS:000320197900006 2-s2.0-84880707101 2-s2.0-84880707101.pdf |
url |
http://dx.doi.org/10.1590/S1516-35982013000600006 http://hdl.handle.net/11449/75577 |
identifier_str_mv |
Revista Brasileira de Zootecnia, v. 42, n. 6, p. 421-427, 2013. 1516-3598 1806-9290 10.1590/S1516-35982013000600006 S1516-35982013000600006 WOS:000320197900006 2-s2.0-84880707101 2-s2.0-84880707101.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Zootecnia 0.735 0,337 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
421-427 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129460732428288 |