Principal component analysis of pre-weaning growth traits in Santa Inês lambs

Detalhes bibliográficos
Autor(a) principal: Koritiaki, Natália Albieri
Data de Publicação: 2019
Outros Autores: Ribeiro, Edson Luis de Azambuja, Muniz, Carolina Amália Souza Dantas, Marestone, Bruna Silva, Fernandes Junior, Francisco
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35394
Resumo: The aim of this study was to evaluate the interrelation among growth traits in Santa Inês lambs using principal component analysis. Data on 270 lambs born between 2008 and 2013 were used. The variables studied were weight at birth,adjusted weight from birth to weaning, and average daily gains at 14, 28, 52, and 70 days of age. The wither height, thoracic perimeter, and length at birth and adjusted at 28 and 70 days of age (weaning), were also used. The statistical model comprised the fixed effects of the contemporary group, the linear effect of julian date at birth, and the linear and quadratic effects of lambing weight. The first principal component explained approximately 89% and 85% of the total variation for body weight at different ages and average daily gains, respectively. The second principal component compared heavier animals or those that gained more weight at 14 days with lighter lambs or those that gained less weight at 14 days of age and explains the variation of approximately 5% and 10%, respectively, among the animals. The first principal component accounted for 77%, 91%, and 77% of the variation for weight, thoracic perimeter, wither height, and length at birth, 28 days, and 70 days of age, respectively, and compared large animals or animals with greater body volume. The second component, with values of 16%, 6%, and 14% of the total variation at the three ages, respectively, compared animals with distinct conformation to discriminate animals of different shapes and verified that the weights at the different ages and the thoracic perimeter are important sources of variability among the animals.
id UEL-11_911bcd4775941cb99a66a9df90b03f6f
oai_identifier_str oai:ojs.pkp.sfu.ca:article/35394
network_acronym_str UEL-11
network_name_str Semina. Ciências Agrárias (Online)
repository_id_str
spelling Principal component analysis of pre-weaning growth traits in Santa Inês lambsAnálise de componentes principais para características de crescimento pré-desmame em ovinos da raça Santa InêsBiometric measuresMultivariate analysisSelection.Weights.Análise multivariadaMedidas biométricasPesosSeleção.The aim of this study was to evaluate the interrelation among growth traits in Santa Inês lambs using principal component analysis. Data on 270 lambs born between 2008 and 2013 were used. The variables studied were weight at birth,adjusted weight from birth to weaning, and average daily gains at 14, 28, 52, and 70 days of age. The wither height, thoracic perimeter, and length at birth and adjusted at 28 and 70 days of age (weaning), were also used. The statistical model comprised the fixed effects of the contemporary group, the linear effect of julian date at birth, and the linear and quadratic effects of lambing weight. The first principal component explained approximately 89% and 85% of the total variation for body weight at different ages and average daily gains, respectively. The second principal component compared heavier animals or those that gained more weight at 14 days with lighter lambs or those that gained less weight at 14 days of age and explains the variation of approximately 5% and 10%, respectively, among the animals. The first principal component accounted for 77%, 91%, and 77% of the variation for weight, thoracic perimeter, wither height, and length at birth, 28 days, and 70 days of age, respectively, and compared large animals or animals with greater body volume. The second component, with values of 16%, 6%, and 14% of the total variation at the three ages, respectively, compared animals with distinct conformation to discriminate animals of different shapes and verified that the weights at the different ages and the thoracic perimeter are important sources of variability among the animals.Objetivou-se com este trabalho avaliar as inter-relações entre as medidas de crescimento em cordeiros da raça Santa Inês no período pré-desmame, utilizando-se a técnica dos componentes principais. Para tanto, contou-se com informações de 270 cordeiros, nascidos entre 2008 e 2013. As variáveis estudadas foram o peso ao nascimento, os pesos corrigidos e ganhos médios diários aos 14, 28, 52 e 70 dias de idade. Foram utilizadas as medidas, altura de cernelha, perímetro torácico e comprimento ao nascimento e corrigidas para os 28 e 70 dias de idade de cordeiros Santa Inês. O modelo estatístico utilizado na análise por componentes principais para todas as características estudadas incluiu os efeitos de grupo de contemporâneos, o efeito linear da data juliana de nascimento e os efeitos linear e quadrático do peso da ovelha ao parto. Para os pesos às diferentes idades e os ganhos médios diários o primeiro componente principal acumulou 89% e 85% da variação total, respectivamente. O segundo componente contrastou animais mais pesados ou ganharam mais peso aos 14 dias com aqueles que foram mais leves ou ganharam menos pesos nas demais idades, explicando 5 e 10% da variabilidade entre os animais. Para as medidas de peso, perímetro torácico, altura de cernelha e comprimento ao nascimento, aos 28 dias de idade e aos 70 dias de idade, o primeiro componente, que acumulou 77%, 91% e 77% da variabilidade existente, respectivamente, comparou animais de maior tamanho ou volume corporal. O segundo componente, com 16%, 6% e 14%, respectivamente da variabilidade total, comparou animais de diferentes conformações e verificou-se que os pesos nas diferentes idades e o perímetro torácico são importantes fontes de variabilidade entre os animais.UEL2019-09-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpesquisa científicaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3539410.5433/1679-0359.2019v40n6Supl2p3269Semina: Ciências Agrárias; Vol. 40 No. 6Supl2 (2019); 3269-3278Semina: Ciências Agrárias; v. 40 n. 6Supl2 (2019); 3269-32781679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35394/26147Copyright (c) 2019 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessKoritiaki, Natália AlbieriRibeiro, Edson Luis de AzambujaMuniz, Carolina Amália Souza DantasMarestone, Bruna SilvaFernandes Junior, Francisco2022-10-10T16:28:25Zoai:ojs.pkp.sfu.ca:article/35394Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-10T16:28:25Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Principal component analysis of pre-weaning growth traits in Santa Inês lambs
Análise de componentes principais para características de crescimento pré-desmame em ovinos da raça Santa Inês
title Principal component analysis of pre-weaning growth traits in Santa Inês lambs
spellingShingle Principal component analysis of pre-weaning growth traits in Santa Inês lambs
Koritiaki, Natália Albieri
Biometric measures
Multivariate analysis
Selection.Weights.
Análise multivariada
Medidas biométricas
Pesos
Seleção.
title_short Principal component analysis of pre-weaning growth traits in Santa Inês lambs
title_full Principal component analysis of pre-weaning growth traits in Santa Inês lambs
title_fullStr Principal component analysis of pre-weaning growth traits in Santa Inês lambs
title_full_unstemmed Principal component analysis of pre-weaning growth traits in Santa Inês lambs
title_sort Principal component analysis of pre-weaning growth traits in Santa Inês lambs
author Koritiaki, Natália Albieri
author_facet Koritiaki, Natália Albieri
Ribeiro, Edson Luis de Azambuja
Muniz, Carolina Amália Souza Dantas
Marestone, Bruna Silva
Fernandes Junior, Francisco
author_role author
author2 Ribeiro, Edson Luis de Azambuja
Muniz, Carolina Amália Souza Dantas
Marestone, Bruna Silva
Fernandes Junior, Francisco
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Koritiaki, Natália Albieri
Ribeiro, Edson Luis de Azambuja
Muniz, Carolina Amália Souza Dantas
Marestone, Bruna Silva
Fernandes Junior, Francisco
dc.subject.por.fl_str_mv Biometric measures
Multivariate analysis
Selection.Weights.
Análise multivariada
Medidas biométricas
Pesos
Seleção.
topic Biometric measures
Multivariate analysis
Selection.Weights.
Análise multivariada
Medidas biométricas
Pesos
Seleção.
description The aim of this study was to evaluate the interrelation among growth traits in Santa Inês lambs using principal component analysis. Data on 270 lambs born between 2008 and 2013 were used. The variables studied were weight at birth,adjusted weight from birth to weaning, and average daily gains at 14, 28, 52, and 70 days of age. The wither height, thoracic perimeter, and length at birth and adjusted at 28 and 70 days of age (weaning), were also used. The statistical model comprised the fixed effects of the contemporary group, the linear effect of julian date at birth, and the linear and quadratic effects of lambing weight. The first principal component explained approximately 89% and 85% of the total variation for body weight at different ages and average daily gains, respectively. The second principal component compared heavier animals or those that gained more weight at 14 days with lighter lambs or those that gained less weight at 14 days of age and explains the variation of approximately 5% and 10%, respectively, among the animals. The first principal component accounted for 77%, 91%, and 77% of the variation for weight, thoracic perimeter, wither height, and length at birth, 28 days, and 70 days of age, respectively, and compared large animals or animals with greater body volume. The second component, with values of 16%, 6%, and 14% of the total variation at the three ages, respectively, compared animals with distinct conformation to discriminate animals of different shapes and verified that the weights at the different ages and the thoracic perimeter are important sources of variability among the animals.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
pesquisa científica
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35394
10.5433/1679-0359.2019v40n6Supl2p3269
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35394
identifier_str_mv 10.5433/1679-0359.2019v40n6Supl2p3269
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35394/26147
dc.rights.driver.fl_str_mv Copyright (c) 2019 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2019 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 40 No. 6Supl2 (2019); 3269-3278
Semina: Ciências Agrárias; v. 40 n. 6Supl2 (2019); 3269-3278
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
_version_ 1799306081063665664