Environmental factors influence on preweaning swine performance

Detalhes bibliográficos
Autor(a) principal: Ferraz, José Bento Sterman
Data de Publicação: 2014
Outros Autores: Duarte, Francisco A. de Moura
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/15708
Resumo: Individual weights of 746 pigletts at birth, at 21 days of age and at weaning were analysed by Least Squares method considering year and season of birth, litter order, sex and litter sire at birth, as independent variables. The year and the season of the birth affected significantly the 21 day and weaning weights, and the weights were higher with the increase of years. Highest weights were observed during the low temperature season and lowest weights during the hight temperature season. Litter order affected all the weights and a tendency of increasing the weights with flue increasing of order was observed. Sex had significant influence only on birth weight, when the males were heavier. Females had better gain on weight from birth to weaning probably due to the stress caused by castration in the males. Litter sire affected all the weights, although that influence was lowest as the age increased. Generally the weights decreased with the increasing of litter size.
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spelling Environmental factors influence on preweaning swine performanceInfluência de fatores ambientais no desempenho de suínos em fase de aleitamentogenetics; environment; performance; swine breeedingambiente; leitões em aleitamento; genética; melhoramento de suínosIndividual weights of 746 pigletts at birth, at 21 days of age and at weaning were analysed by Least Squares method considering year and season of birth, litter order, sex and litter sire at birth, as independent variables. The year and the season of the birth affected significantly the 21 day and weaning weights, and the weights were higher with the increase of years. Highest weights were observed during the low temperature season and lowest weights during the hight temperature season. Litter order affected all the weights and a tendency of increasing the weights with flue increasing of order was observed. Sex had significant influence only on birth weight, when the males were heavier. Females had better gain on weight from birth to weaning probably due to the stress caused by castration in the males. Litter sire affected all the weights, although that influence was lowest as the age increased. Generally the weights decreased with the increasing of litter size.Os pesos individuais ao nascimento, aos 21 dias de idade e à desmama de 746 leitões das raças Landrace, Wessex-Saddleback e seus mestiços foram analisados pelo método dos quadrados mínimos, considerando-se os efeitos fixos das variáveis ano e época do nascimento, ordem do parto, sexo do leitão e tamanho de leitegada. O efeito de ano de nascimento revelou-se significativo para os pesos aos 21 dias e à desmama, sendo os pesos crescentes com a progressão dos anos, com exceção de 1978. Os mesmos pesos foram influenciados pela época de nascimento, tendo os maiores pesos sido verificados em épocas de temperaturas mais amenas, ao passo que os menores ocorreram em épocas de altas temperaturas. A ordem do parto teve influência estatisticamente significativa sobre todos os pesos estudados, verificando-se a tendência de aumento dos pesos com a progressão das ordens de parto, indicando que as fêmeas, ao menos até o quarto parto, vão se tomando melhores mães. O sexo do leitão influenciou apenas o peso ao nascimento, quando os machos nasceram mais pesados. As fêmeas apresentaram maiores pesos à desmama, sendo tal fato devido, possivelmente, ao "stress" causado pela castração, realizada aos 21 dias nos machos. O tamanho de leitegada influenciou todos os pesos, embora tal influência tenha sido menor à medida que os leitões ficaram menos dependentes de suas mães. Em geral, os pesos individuais diminuíram com o aumento da leitegada.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFerraz, José Bento StermanDuarte, Francisco A. de Moura2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15708Pesquisa Agropecuaria Brasileira; v.17, n.3, mar. 1982; 489-496Pesquisa Agropecuária Brasileira; v.17, n.3, mar. 1982; 489-4961678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15708/9720info:eu-repo/semantics/openAccess2014-04-16T12:34:35Zoai:ojs.seer.sct.embrapa.br:article/15708Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T12:34:35Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Environmental factors influence on preweaning swine performance
Influência de fatores ambientais no desempenho de suínos em fase de aleitamento
title Environmental factors influence on preweaning swine performance
spellingShingle Environmental factors influence on preweaning swine performance
Ferraz, José Bento Sterman
genetics; environment; performance; swine breeeding
ambiente; leitões em aleitamento; genética; melhoramento de suínos
title_short Environmental factors influence on preweaning swine performance
title_full Environmental factors influence on preweaning swine performance
title_fullStr Environmental factors influence on preweaning swine performance
title_full_unstemmed Environmental factors influence on preweaning swine performance
title_sort Environmental factors influence on preweaning swine performance
author Ferraz, José Bento Sterman
author_facet Ferraz, José Bento Sterman
Duarte, Francisco A. de Moura
author_role author
author2 Duarte, Francisco A. de Moura
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Ferraz, José Bento Sterman
Duarte, Francisco A. de Moura
dc.subject.por.fl_str_mv genetics; environment; performance; swine breeeding
ambiente; leitões em aleitamento; genética; melhoramento de suínos
topic genetics; environment; performance; swine breeeding
ambiente; leitões em aleitamento; genética; melhoramento de suínos
description Individual weights of 746 pigletts at birth, at 21 days of age and at weaning were analysed by Least Squares method considering year and season of birth, litter order, sex and litter sire at birth, as independent variables. The year and the season of the birth affected significantly the 21 day and weaning weights, and the weights were higher with the increase of years. Highest weights were observed during the low temperature season and lowest weights during the hight temperature season. Litter order affected all the weights and a tendency of increasing the weights with flue increasing of order was observed. Sex had significant influence only on birth weight, when the males were heavier. Females had better gain on weight from birth to weaning probably due to the stress caused by castration in the males. Litter sire affected all the weights, although that influence was lowest as the age increased. Generally the weights decreased with the increasing of litter size.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/15708
url https://seer.sct.embrapa.br/index.php/pab/article/view/15708
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/15708/9720
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.17, n.3, mar. 1982; 489-496
Pesquisa Agropecuária Brasileira; v.17, n.3, mar. 1982; 489-496
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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