Reproductive success or failure in four breed groups of beef bulls
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/144297 |
Resumo: | The objective of this study was to determine the main causes of failure in bull breeding using a soundness evaluation in Rio Grande do Sul State/Brazil. We evaluated 19,836 bulls from 15 different breeds with ages ranging from two to eight years. The failures of bulls in each step were analyzed by logistic regression. The binary logistic regression was applied because the response variable had only two responses: Success (1) and Failure (0). Older bulls are more likely to be rejected than are younger bulls, regardless of their genetic group. Depending on the step of the assessment, one or another group is rejected. All steps of bull breeding soundness evaluation (BBSE) are important, with special attention to the failures of the behavioral evaluation (libido and physical ability). A BBSE performed before the breeding season reduces the risk of sub-fertile bulls in the herd. |
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Menegassi, Silvio Renato OliveiraBarcellos, Julio Otavio JardimPeripolli, VanessaDias, Eduardo AntunesCosta Junior, João Batista GonçalvesVieira, Maitê de MoraesMoojen, Fernanda Gomes2016-08-09T02:14:58Z20151516-3598http://hdl.handle.net/10183/144297000983726The objective of this study was to determine the main causes of failure in bull breeding using a soundness evaluation in Rio Grande do Sul State/Brazil. We evaluated 19,836 bulls from 15 different breeds with ages ranging from two to eight years. The failures of bulls in each step were analyzed by logistic regression. The binary logistic regression was applied because the response variable had only two responses: Success (1) and Failure (0). Older bulls are more likely to be rejected than are younger bulls, regardless of their genetic group. Depending on the step of the assessment, one or another group is rejected. All steps of bull breeding soundness evaluation (BBSE) are important, with special attention to the failures of the behavioral evaluation (libido and physical ability). A BBSE performed before the breeding season reduces the risk of sub-fertile bulls in the herd.application/pdfengRevista brasileira de zootecnia= Brazilian journal of animal science [recurso eletrônico]. Viçosa, MG. Vol. 44, n. 7 (jul. 2015), p. 240-247Melhoramento genetico animalReprodução animalFertilidadeTouroBBSEFertilityMounting abilityScrotal circumferenceReproductive success or failure in four breed groups of beef bullsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000983726.pdf000983726.pdfTexto completo (inglês)application/pdf889758http://www.lume.ufrgs.br/bitstream/10183/144297/1/000983726.pdfe1b5cbc778b979b4dd082f321e447d37MD51TEXT000983726.pdf.txt000983726.pdf.txtExtracted Texttext/plain34327http://www.lume.ufrgs.br/bitstream/10183/144297/2/000983726.pdf.txt855abb063f48de249853042c9ed76212MD52THUMBNAIL000983726.pdf.jpg000983726.pdf.jpgGenerated Thumbnailimage/jpeg2261http://www.lume.ufrgs.br/bitstream/10183/144297/3/000983726.pdf.jpg01aae83f0d6c8d472259ebc876808da6MD5310183/1442972018-10-29 07:47:46.085oai:www.lume.ufrgs.br:10183/144297Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-29T10:47:46Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Reproductive success or failure in four breed groups of beef bulls |
title |
Reproductive success or failure in four breed groups of beef bulls |
spellingShingle |
Reproductive success or failure in four breed groups of beef bulls Menegassi, Silvio Renato Oliveira Melhoramento genetico animal Reprodução animal Fertilidade Touro BBSE Fertility Mounting ability Scrotal circumference |
title_short |
Reproductive success or failure in four breed groups of beef bulls |
title_full |
Reproductive success or failure in four breed groups of beef bulls |
title_fullStr |
Reproductive success or failure in four breed groups of beef bulls |
title_full_unstemmed |
Reproductive success or failure in four breed groups of beef bulls |
title_sort |
Reproductive success or failure in four breed groups of beef bulls |
author |
Menegassi, Silvio Renato Oliveira |
author_facet |
Menegassi, Silvio Renato Oliveira Barcellos, Julio Otavio Jardim Peripolli, Vanessa Dias, Eduardo Antunes Costa Junior, João Batista Gonçalves Vieira, Maitê de Moraes Moojen, Fernanda Gomes |
author_role |
author |
author2 |
Barcellos, Julio Otavio Jardim Peripolli, Vanessa Dias, Eduardo Antunes Costa Junior, João Batista Gonçalves Vieira, Maitê de Moraes Moojen, Fernanda Gomes |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Menegassi, Silvio Renato Oliveira Barcellos, Julio Otavio Jardim Peripolli, Vanessa Dias, Eduardo Antunes Costa Junior, João Batista Gonçalves Vieira, Maitê de Moraes Moojen, Fernanda Gomes |
dc.subject.por.fl_str_mv |
Melhoramento genetico animal Reprodução animal Fertilidade Touro |
topic |
Melhoramento genetico animal Reprodução animal Fertilidade Touro BBSE Fertility Mounting ability Scrotal circumference |
dc.subject.eng.fl_str_mv |
BBSE Fertility Mounting ability Scrotal circumference |
description |
The objective of this study was to determine the main causes of failure in bull breeding using a soundness evaluation in Rio Grande do Sul State/Brazil. We evaluated 19,836 bulls from 15 different breeds with ages ranging from two to eight years. The failures of bulls in each step were analyzed by logistic regression. The binary logistic regression was applied because the response variable had only two responses: Success (1) and Failure (0). Older bulls are more likely to be rejected than are younger bulls, regardless of their genetic group. Depending on the step of the assessment, one or another group is rejected. All steps of bull breeding soundness evaluation (BBSE) are important, with special attention to the failures of the behavioral evaluation (libido and physical ability). A BBSE performed before the breeding season reduces the risk of sub-fertile bulls in the herd. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2016-08-09T02:14:58Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/144297 |
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1516-3598 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000983726 |
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1516-3598 000983726 |
url |
http://hdl.handle.net/10183/144297 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Revista brasileira de zootecnia= Brazilian journal of animal science [recurso eletrônico]. Viçosa, MG. Vol. 44, n. 7 (jul. 2015), p. 240-247 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Repositório Institucional da UFRGS |
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