Can scrotal circumference-based selection discard bulls with good productive and reproductive potential?
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://doi.org/10.1371/journal.pone.0193103 http://www.locus.ufv.br/handle/123456789/18770 |
Resumo: | Nonlinear mixed models were used to describe longitudinal scrotal circumference (SC) measurements of Nellore bulls. Models comparisons were based on Akaike’s information criterion, Bayesian information criterion, error sum of squares, adjusted R2 and percentage of convergence. Sequentially, the best model was used to compare the SC growth curve in bulls divergently classified according to SC at 18–21 months of age. For this, bulls were classified into five groups: SC < 28cm; 28cm SC < 30cm, 30cm SC < 32cm, 32cm SC < 34cm and SC ! 34cm. Michaelis-Menten model showed the best fit according to the mentioned criteria. In this model, β1 is the asymptotic SC value and β2 represents the time to half-final growth and may be related to sexual precocity. Parameters of the individual esti- mated growth curves were used to create a new dataset to evaluate the effect of the classifi- cation, farms, and year of birth on β1 and β2 parameters. Bulls of the largest SC group presented a larger predicted SC along all analyzed periods; nevertheless, smaller SC group showed predicted SC similar to intermediate SC groups (28cm SC < 32cm), around 1200 days of age. In this context, bulls classified as improper for reproduction at 18–21 months old can reach a similar condition to those considered as good condition. In terms of classification at 18–21 months, asymptotic SC was similar among groups, farms and years; how- ever, β2 differed among groups indicating that differences in growth curves are related to sexual precocity. In summary, it seems that selection based on SC at too early ages may lead to discard bulls with suitable reproductive potential. |
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Penitente-Filho, Jurandy MauroVilladiego, Faider Alberto CastañoSilva, Fabyano Fonseca eCamilo, Breno SoaresLeon, Victor GomezPeixoto, ThiagoDıaz, EdgarOkano, DeniseMaitan, PaulaLima, DanielGuimarães, Simone FacioniSiqueira, Jeanne BrochPinho, RogerioGuimarães, Jose Domingos2018-04-17T18:06:24Z2018-04-17T18:06:24Z2018-02-051932-6203https://doi.org/10.1371/journal.pone.0193103http://www.locus.ufv.br/handle/123456789/18770Nonlinear mixed models were used to describe longitudinal scrotal circumference (SC) measurements of Nellore bulls. Models comparisons were based on Akaike’s information criterion, Bayesian information criterion, error sum of squares, adjusted R2 and percentage of convergence. Sequentially, the best model was used to compare the SC growth curve in bulls divergently classified according to SC at 18–21 months of age. For this, bulls were classified into five groups: SC < 28cm; 28cm SC < 30cm, 30cm SC < 32cm, 32cm SC < 34cm and SC ! 34cm. Michaelis-Menten model showed the best fit according to the mentioned criteria. In this model, β1 is the asymptotic SC value and β2 represents the time to half-final growth and may be related to sexual precocity. Parameters of the individual esti- mated growth curves were used to create a new dataset to evaluate the effect of the classifi- cation, farms, and year of birth on β1 and β2 parameters. Bulls of the largest SC group presented a larger predicted SC along all analyzed periods; nevertheless, smaller SC group showed predicted SC similar to intermediate SC groups (28cm SC < 32cm), around 1200 days of age. In this context, bulls classified as improper for reproduction at 18–21 months old can reach a similar condition to those considered as good condition. In terms of classification at 18–21 months, asymptotic SC was similar among groups, farms and years; how- ever, β2 differed among groups indicating that differences in growth curves are related to sexual precocity. In summary, it seems that selection based on SC at too early ages may lead to discard bulls with suitable reproductive potential.engPlos Onev. 13, n. 3, p. 1-14, março 2018ScrotalNellore bullsReproductiveCan scrotal circumference-based selection discard bulls with good productive and reproductive potential?info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdfartigoapplication/pdf2751248https://locus.ufv.br//bitstream/123456789/18770/1/artigo.pdf840e09295dde0740f1a8618bcbc9099fMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/18770/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILartigo.pdf.jpgartigo.pdf.jpgIM Thumbnailimage/jpeg3303https://locus.ufv.br//bitstream/123456789/18770/3/artigo.pdf.jpge70a3aa048a7f4f1cdd84aec43c3c4d0MD53123456789/187702018-04-17 23:00:34.662oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452018-04-18T02:00:34LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? |
title |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? |
spellingShingle |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? Penitente-Filho, Jurandy Mauro Scrotal Nellore bulls Reproductive |
title_short |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? |
title_full |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? |
title_fullStr |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? |
title_full_unstemmed |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? |
title_sort |
Can scrotal circumference-based selection discard bulls with good productive and reproductive potential? |
author |
Penitente-Filho, Jurandy Mauro |
author_facet |
Penitente-Filho, Jurandy Mauro Villadiego, Faider Alberto Castaño Silva, Fabyano Fonseca e Camilo, Breno Soares Leon, Victor Gomez Peixoto, Thiago Dıaz, Edgar Okano, Denise Maitan, Paula Lima, Daniel Guimarães, Simone Facioni Siqueira, Jeanne Broch Pinho, Rogerio Guimarães, Jose Domingos |
author_role |
author |
author2 |
Villadiego, Faider Alberto Castaño Silva, Fabyano Fonseca e Camilo, Breno Soares Leon, Victor Gomez Peixoto, Thiago Dıaz, Edgar Okano, Denise Maitan, Paula Lima, Daniel Guimarães, Simone Facioni Siqueira, Jeanne Broch Pinho, Rogerio Guimarães, Jose Domingos |
author2_role |
author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Penitente-Filho, Jurandy Mauro Villadiego, Faider Alberto Castaño Silva, Fabyano Fonseca e Camilo, Breno Soares Leon, Victor Gomez Peixoto, Thiago Dıaz, Edgar Okano, Denise Maitan, Paula Lima, Daniel Guimarães, Simone Facioni Siqueira, Jeanne Broch Pinho, Rogerio Guimarães, Jose Domingos |
dc.subject.pt-BR.fl_str_mv |
Scrotal Nellore bulls Reproductive |
topic |
Scrotal Nellore bulls Reproductive |
description |
Nonlinear mixed models were used to describe longitudinal scrotal circumference (SC) measurements of Nellore bulls. Models comparisons were based on Akaike’s information criterion, Bayesian information criterion, error sum of squares, adjusted R2 and percentage of convergence. Sequentially, the best model was used to compare the SC growth curve in bulls divergently classified according to SC at 18–21 months of age. For this, bulls were classified into five groups: SC < 28cm; 28cm SC < 30cm, 30cm SC < 32cm, 32cm SC < 34cm and SC ! 34cm. Michaelis-Menten model showed the best fit according to the mentioned criteria. In this model, β1 is the asymptotic SC value and β2 represents the time to half-final growth and may be related to sexual precocity. Parameters of the individual esti- mated growth curves were used to create a new dataset to evaluate the effect of the classifi- cation, farms, and year of birth on β1 and β2 parameters. Bulls of the largest SC group presented a larger predicted SC along all analyzed periods; nevertheless, smaller SC group showed predicted SC similar to intermediate SC groups (28cm SC < 32cm), around 1200 days of age. In this context, bulls classified as improper for reproduction at 18–21 months old can reach a similar condition to those considered as good condition. In terms of classification at 18–21 months, asymptotic SC was similar among groups, farms and years; how- ever, β2 differed among groups indicating that differences in growth curves are related to sexual precocity. In summary, it seems that selection based on SC at too early ages may lead to discard bulls with suitable reproductive potential. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-04-17T18:06:24Z |
dc.date.available.fl_str_mv |
2018-04-17T18:06:24Z |
dc.date.issued.fl_str_mv |
2018-02-05 |
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 |
https://doi.org/10.1371/journal.pone.0193103 http://www.locus.ufv.br/handle/123456789/18770 |
dc.identifier.issn.none.fl_str_mv |
1932-6203 |
identifier_str_mv |
1932-6203 |
url |
https://doi.org/10.1371/journal.pone.0193103 http://www.locus.ufv.br/handle/123456789/18770 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
v. 13, n. 3, p. 1-14, março 2018 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Plos One |
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Plos One |
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