Growth curve of Nellore calves reared on natural pasture in the Pantanal

Detalhes bibliográficos
Autor(a) principal: Santos,Sandra Aparecida
Data de Publicação: 2011
Outros Autores: Souza,Geraldo Silva e, Costa,Ciniro, Abreu,Urbano Gomes Pinto de, Alves,Fabiana Villa, Ítavo,Luís Carlos Vinhas
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Zootecnia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200043
Resumo: Weight-age and hip height-age relations of Nellore calves, from birth to 10 months old were fitted using a logistic model including sex and year of birth as fixed effects. Calves and their dams were reared on natural pasture using continuous grazing system. The crude protein content and total digestible nutrients were analyzed for pasture selected by the animals. The weights of the calves were adjusted to 205 days and 365 days. There were no significant effects of sex and birth year on the growth curve parameters, but there were significant effects of sex on hip height. The average weight (a parameter) at 10 months of age was 170 kg and the inflection point was observed at 93.5 days old. When weight-age and hip height-age curves were combined in the same graph, the intersection occurred at 142 days. The number of days to gain 160 kg from birth to 205 days of age (adjusted) and number of days to gain 240 kg from 205 days to slaughter was different between the birth years, which were probably due to the quality of the natural pastures. It is necessary to implement nutritional management strategies such as high quality pasture and/or feeding supplementation for calves once they reach three months of age.
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spelling Growth curve of Nellore calves reared on natural pasture in the Pantanalbeef cattlehip heightweanling weightWeight-age and hip height-age relations of Nellore calves, from birth to 10 months old were fitted using a logistic model including sex and year of birth as fixed effects. Calves and their dams were reared on natural pasture using continuous grazing system. The crude protein content and total digestible nutrients were analyzed for pasture selected by the animals. The weights of the calves were adjusted to 205 days and 365 days. There were no significant effects of sex and birth year on the growth curve parameters, but there were significant effects of sex on hip height. The average weight (a parameter) at 10 months of age was 170 kg and the inflection point was observed at 93.5 days old. When weight-age and hip height-age curves were combined in the same graph, the intersection occurred at 142 days. The number of days to gain 160 kg from birth to 205 days of age (adjusted) and number of days to gain 240 kg from 205 days to slaughter was different between the birth years, which were probably due to the quality of the natural pastures. It is necessary to implement nutritional management strategies such as high quality pasture and/or feeding supplementation for calves once they reach three months of age.Sociedade Brasileira de Zootecnia2011-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200043Revista Brasileira de Zootecnia v.40 n.12 2011reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982011001200043info:eu-repo/semantics/openAccessSantos,Sandra AparecidaSouza,Geraldo Silva eCosta,CiniroAbreu,Urbano Gomes Pinto deAlves,Fabiana VillaÍtavo,Luís Carlos Vinhaseng2012-01-19T00:00:00Zoai:scielo:S1516-35982011001200043Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2012-01-19T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false
dc.title.none.fl_str_mv Growth curve of Nellore calves reared on natural pasture in the Pantanal
title Growth curve of Nellore calves reared on natural pasture in the Pantanal
spellingShingle Growth curve of Nellore calves reared on natural pasture in the Pantanal
Santos,Sandra Aparecida
beef cattle
hip height
weanling weight
title_short Growth curve of Nellore calves reared on natural pasture in the Pantanal
title_full Growth curve of Nellore calves reared on natural pasture in the Pantanal
title_fullStr Growth curve of Nellore calves reared on natural pasture in the Pantanal
title_full_unstemmed Growth curve of Nellore calves reared on natural pasture in the Pantanal
title_sort Growth curve of Nellore calves reared on natural pasture in the Pantanal
author Santos,Sandra Aparecida
author_facet Santos,Sandra Aparecida
Souza,Geraldo Silva e
Costa,Ciniro
Abreu,Urbano Gomes Pinto de
Alves,Fabiana Villa
Ítavo,Luís Carlos Vinhas
author_role author
author2 Souza,Geraldo Silva e
Costa,Ciniro
Abreu,Urbano Gomes Pinto de
Alves,Fabiana Villa
Ítavo,Luís Carlos Vinhas
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Santos,Sandra Aparecida
Souza,Geraldo Silva e
Costa,Ciniro
Abreu,Urbano Gomes Pinto de
Alves,Fabiana Villa
Ítavo,Luís Carlos Vinhas
dc.subject.por.fl_str_mv beef cattle
hip height
weanling weight
topic beef cattle
hip height
weanling weight
description Weight-age and hip height-age relations of Nellore calves, from birth to 10 months old were fitted using a logistic model including sex and year of birth as fixed effects. Calves and their dams were reared on natural pasture using continuous grazing system. The crude protein content and total digestible nutrients were analyzed for pasture selected by the animals. The weights of the calves were adjusted to 205 days and 365 days. There were no significant effects of sex and birth year on the growth curve parameters, but there were significant effects of sex on hip height. The average weight (a parameter) at 10 months of age was 170 kg and the inflection point was observed at 93.5 days old. When weight-age and hip height-age curves were combined in the same graph, the intersection occurred at 142 days. The number of days to gain 160 kg from birth to 205 days of age (adjusted) and number of days to gain 240 kg from 205 days to slaughter was different between the birth years, which were probably due to the quality of the natural pastures. It is necessary to implement nutritional management strategies such as high quality pasture and/or feeding supplementation for calves once they reach three months of age.
publishDate 2011
dc.date.none.fl_str_mv 2011-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200043
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200043
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-35982011001200043
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
dc.source.none.fl_str_mv Revista Brasileira de Zootecnia v.40 n.12 2011
reponame:Revista Brasileira de Zootecnia (Online)
instname:Sociedade Brasileira de Zootecnia (SBZ)
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collection Revista Brasileira de Zootecnia (Online)
repository.name.fl_str_mv Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)
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