Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil

Detalhes bibliográficos
Autor(a) principal: Aroeira, José Antonio D. C.
Data de Publicação: 2014
Outros Autores: Rosa, Antonio do Nascimento
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/15637
Resumo: Reproductive performance data analyzed were those collected over an 18-year period (1955 through 1972) on a Nelore herd raised under natural conditions in file plateau of the state of Mato Grosso do Sul, Brazil. Like by all herds raised under natural conditions, a marked breeding season was found, with 86.8% of conceptions occurring during the rainy season. Age at first calving (FC), number of parturitions (NP) and calving interval were, respectively. 1407 days, four parturitions, and 514 days, with the interval between the first and the second parturition being the longest. The most important source of variation for the first two traits was year of birth of cow (P < .01). For the last trait studied significant effects (P < .01) of year of birth and age of cow were found. The correlations between FC and NP (- .28) and between FC and the first calving interval (- .20) show the necessity of determining the ideal time for breeding in order to maximize the reproductive efficiency of the cows.
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spelling Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, BrazilDesempenho reprodutivo de um rebanho Nelore criado no planalto sul-mato-grossensezebu cattle; breeding season; age at first calving; calving interval; life span; beef cattlegado zebu; estação de reprodução; idade ao primeiro parto; intervalo entre partos; vida útil; bovinos de corteReproductive performance data analyzed were those collected over an 18-year period (1955 through 1972) on a Nelore herd raised under natural conditions in file plateau of the state of Mato Grosso do Sul, Brazil. Like by all herds raised under natural conditions, a marked breeding season was found, with 86.8% of conceptions occurring during the rainy season. Age at first calving (FC), number of parturitions (NP) and calving interval were, respectively. 1407 days, four parturitions, and 514 days, with the interval between the first and the second parturition being the longest. The most important source of variation for the first two traits was year of birth of cow (P < .01). For the last trait studied significant effects (P < .01) of year of birth and age of cow were found. The correlations between FC and NP (- .28) and between FC and the first calving interval (- .20) show the necessity of determining the ideal time for breeding in order to maximize the reproductive efficiency of the cows.Foram analisados dados coletados durante um período de 18 anos (1955-1972), referentes ao desempenho reprodutivo de um rebanho Nelore criado extensivamente no planalto sul-mato-grossense. Como em todos os rebanhos criados naturalmente, encontrou-se uma marcada estação de reprodução, com 86,8% das fecundações ocorrendo no período setembro/outubro a março/abril, correspondente à estação chuvosa. A idade ao primeiro parto (IP), o número de partos (NP) e o intervalo entre partos foram de 1.407 dias, quatro partos e 514 dias, respectivamente, sendo o intervalo entre o primeiro e o segundo parto o de maior duração dentre os demais. A principal causa de variação detectada para as duas primeiras características foi o ano de nascimento (P < .01), enquanto que, para a última, encontraram-se efeitos significativos (P < .01) de ano e idade da vaca. As correlações entre IP e NP (-0,28) e entre IP e intervalo primeiro-segundo parto (-0,20) evidenciam a necessidade de determinar o momento ideal dos acasalamentos, visando a maximização da eficiência reprodutiva das matrizes.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraAroeira, José Antonio D. C.Rosa, Antonio do Nascimento2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15637Pesquisa Agropecuaria Brasileira; v.17, n.2, fev. 1982; 337-343Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 337-3431678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15637/9645info:eu-repo/semantics/openAccess2014-04-16T12:24:17Zoai:ojs.seer.sct.embrapa.br:article/15637Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T12:24:17Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
Desempenho reprodutivo de um rebanho Nelore criado no planalto sul-mato-grossense
title Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
spellingShingle Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
Aroeira, José Antonio D. C.
zebu cattle; breeding season; age at first calving; calving interval; life span; beef cattle
gado zebu; estação de reprodução; idade ao primeiro parto; intervalo entre partos; vida útil; bovinos de corte
title_short Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
title_full Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
title_fullStr Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
title_full_unstemmed Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
title_sort Reproductive performance of a Nellore herd raised in the plateau of Mato Grosso State, Brazil
author Aroeira, José Antonio D. C.
author_facet Aroeira, José Antonio D. C.
Rosa, Antonio do Nascimento
author_role author
author2 Rosa, Antonio do Nascimento
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Aroeira, José Antonio D. C.
Rosa, Antonio do Nascimento
dc.subject.por.fl_str_mv zebu cattle; breeding season; age at first calving; calving interval; life span; beef cattle
gado zebu; estação de reprodução; idade ao primeiro parto; intervalo entre partos; vida útil; bovinos de corte
topic zebu cattle; breeding season; age at first calving; calving interval; life span; beef cattle
gado zebu; estação de reprodução; idade ao primeiro parto; intervalo entre partos; vida útil; bovinos de corte
description Reproductive performance data analyzed were those collected over an 18-year period (1955 through 1972) on a Nelore herd raised under natural conditions in file plateau of the state of Mato Grosso do Sul, Brazil. Like by all herds raised under natural conditions, a marked breeding season was found, with 86.8% of conceptions occurring during the rainy season. Age at first calving (FC), number of parturitions (NP) and calving interval were, respectively. 1407 days, four parturitions, and 514 days, with the interval between the first and the second parturition being the longest. The most important source of variation for the first two traits was year of birth of cow (P < .01). For the last trait studied significant effects (P < .01) of year of birth and age of cow were found. The correlations between FC and NP (- .28) and between FC and the first calving interval (- .20) show the necessity of determining the ideal time for breeding in order to maximize the reproductive efficiency of the cows.
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/15637
url https://seer.sct.embrapa.br/index.php/pab/article/view/15637
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/15637/9645
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.2, fev. 1982; 337-343
Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 337-343
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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