Frequency of recording for selection on milk production

Detalhes bibliográficos
Autor(a) principal: Martinez, Mário Luiz
Data de Publicação: 2014
Outros Autores: Madalena, Fernando Enrique, Freitas, Ary Ferreira de
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/16694
Resumo: Five milk recording methods were compared: three methods with register of the production of two milkings with biweekly (BW), monthly (M) and bimonthly (BM) frequency; and two methods (A &C) with register of only one milking, alternating the morning and afternoon milkings monthly. The daily production records of 509 lactations of HPB, Jersey and mixed HPB-Gir cows were used. For 425 lactations of 176 cows, it was possible to correct the total production by age and blood degree, and to express it as a deviation from the contemporary companions. For effects of selection on milk production, all the methods studied resulted in a similar genetic gain, for cows as well as for bulls, enabling the choice between them to be made solely on the basis of practical considerations.
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spelling Frequency of recording for selection on milk productionFrequência dos registros na seleção para produção de leitemilk recording frequency; selection; milk production; repeatabilityfrequência do controle leiteiro; seleção; produção de leite; repetibilidadeFive milk recording methods were compared: three methods with register of the production of two milkings with biweekly (BW), monthly (M) and bimonthly (BM) frequency; and two methods (A &C) with register of only one milking, alternating the morning and afternoon milkings monthly. The daily production records of 509 lactations of HPB, Jersey and mixed HPB-Gir cows were used. For 425 lactations of 176 cows, it was possible to correct the total production by age and blood degree, and to express it as a deviation from the contemporary companions. For effects of selection on milk production, all the methods studied resulted in a similar genetic gain, for cows as well as for bulls, enabling the choice between them to be made solely on the basis of practical considerations.Foram comparados cinco métodos de controle leiteiro: três métodos com registro da produção das duas ordenhas com frequência quinzenal (Q), mensal (M) e bimensal (B);e dois métodos (A e C) com registro da produção de apenas uma ordenha, alternando mensalmente a da manhã da tarde. Utilizaram-se os registros diários de produção de 509 lactações de vacas HPB, Jersey e mestiças HPB-Gir. Para 425 lactações de 176 vacas, foi possível corrigir a produção total por idade e grau de sangue, e expressá-la como desvio das companheiras contemporâneas. Para efeitos de seleção por produção de leite, todos os métodos estudados resultaram em ganho genético similar, tanto por parte das vacas quanto por parte dos touros, podendo ficar, então, a escolha entre eles, apenas na dependência de considerações práticas.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMartinez, Mário LuizMadalena, Fernando EnriqueFreitas, Ary Ferreira de2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16694Pesquisa Agropecuaria Brasileira; v.14, n.3, mar. 1979; 243-250Pesquisa Agropecuária Brasileira; v.14, n.3, mar. 1979; 243-2501678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16694/11008info:eu-repo/semantics/openAccess2014-04-15T19:26:04Zoai:ojs.seer.sct.embrapa.br:article/16694Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T19:26:04Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Frequency of recording for selection on milk production
Frequência dos registros na seleção para produção de leite
title Frequency of recording for selection on milk production
spellingShingle Frequency of recording for selection on milk production
Martinez, Mário Luiz
milk recording frequency; selection; milk production; repeatability
frequência do controle leiteiro; seleção; produção de leite; repetibilidade
title_short Frequency of recording for selection on milk production
title_full Frequency of recording for selection on milk production
title_fullStr Frequency of recording for selection on milk production
title_full_unstemmed Frequency of recording for selection on milk production
title_sort Frequency of recording for selection on milk production
author Martinez, Mário Luiz
author_facet Martinez, Mário Luiz
Madalena, Fernando Enrique
Freitas, Ary Ferreira de
author_role author
author2 Madalena, Fernando Enrique
Freitas, Ary Ferreira de
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Martinez, Mário Luiz
Madalena, Fernando Enrique
Freitas, Ary Ferreira de
dc.subject.por.fl_str_mv milk recording frequency; selection; milk production; repeatability
frequência do controle leiteiro; seleção; produção de leite; repetibilidade
topic milk recording frequency; selection; milk production; repeatability
frequência do controle leiteiro; seleção; produção de leite; repetibilidade
description Five milk recording methods were compared: three methods with register of the production of two milkings with biweekly (BW), monthly (M) and bimonthly (BM) frequency; and two methods (A &C) with register of only one milking, alternating the morning and afternoon milkings monthly. The daily production records of 509 lactations of HPB, Jersey and mixed HPB-Gir cows were used. For 425 lactations of 176 cows, it was possible to correct the total production by age and blood degree, and to express it as a deviation from the contemporary companions. For effects of selection on milk production, all the methods studied resulted in a similar genetic gain, for cows as well as for bulls, enabling the choice between them to be made solely on the basis of practical considerations.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-15
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/16694
url https://seer.sct.embrapa.br/index.php/pab/article/view/16694
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/16694/11008
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.14, n.3, mar. 1979; 243-250
Pesquisa Agropecuária Brasileira; v.14, n.3, mar. 1979; 243-250
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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