Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age

Detalhes bibliográficos
Autor(a) principal: Gottschall, Carlos Santos
Data de Publicação: 2009
Outros Autores: Canellas, Leonardo Canali, Marques, Pedro Rocha, Bittencourt, Hélio Radke
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3588
Resumo: The main objective of this research was to evaluate the relationship between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age. Four hundred and thirty two beef steers were divided in two groups: 267 younger steers (YY), confined at 12 and slaughtered at 15 months old; and 165 young steers (YS), confined at 25 and slaughtered at 27 months of age. Beginning weight (BW) was 296.98 and 352.04 kg to YY and YS, respectively (p < 0.01). Steers were on feedlot until reach a minimum fat percentage, resulting on seven different values for DF. In the statistical analysis the BW and the DF were calculated as co-variables. YS reach higher AWG (1.351 vs 1.004 kg/day) and higher SW (441.88 vs 388.88 kg) (p < 0.01) and lower (p < 0.01) DF (66.87 and 94.20 days, respectively). Steers with higher BW were sold earlier, reaching lower DF. Both groups showed a decrease tendency of AWG as the DF increased. YS reached higher AWG, resulting in lower DF compared with YY. In both groups, while the DF increases, the AWG decreases. Steers with higher BW reached lower DF.    
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spelling Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of ageRelações entre idade, peso, ganho médio diário e tempo médio de permanência de novilhos de corte confinados para abate aos 15 ou 27 meses de idadeYoung steersDays on feedWeight gainFeedlotNovilhos precocesTempo de permanênciaGanho de pesoConfinamentoThe main objective of this research was to evaluate the relationship between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age. Four hundred and thirty two beef steers were divided in two groups: 267 younger steers (YY), confined at 12 and slaughtered at 15 months old; and 165 young steers (YS), confined at 25 and slaughtered at 27 months of age. Beginning weight (BW) was 296.98 and 352.04 kg to YY and YS, respectively (p < 0.01). Steers were on feedlot until reach a minimum fat percentage, resulting on seven different values for DF. In the statistical analysis the BW and the DF were calculated as co-variables. YS reach higher AWG (1.351 vs 1.004 kg/day) and higher SW (441.88 vs 388.88 kg) (p < 0.01) and lower (p < 0.01) DF (66.87 and 94.20 days, respectively). Steers with higher BW were sold earlier, reaching lower DF. Both groups showed a decrease tendency of AWG as the DF increased. YS reached higher AWG, resulting in lower DF compared with YY. In both groups, while the DF increases, the AWG decreases. Steers with higher BW reached lower DF.    Objetivou-se estudar as relações entre idade, peso, ganho médio diário de peso e tempo médio de permanência de novilhos de corte confinados para abate aos 15 ou 27 meses de idade. Foram utilizados 432 novilhos com base racial britânica e cruzas, sendo 267 novilhos superprecoces, confinados aos 12 meses e abatidos em média aos 15 meses (grupo NSP) e 165 novilhos precoces, confinados aos 25 meses e abatidos em média aos 27 meses (grupo NP). Os NSP e os NP iniciaram o experimento com peso médio (PMI) de 296,98 e 352,04 kg, respectivamente (p < 0,01) e foram terminados em confinamento até que atingissem um grau de terminação adequado. Em virtude disso, ocorreram sete períodos diferentes de abate. Na análise estatística o peso médio inicial (PMI) e o tempo médio de permanência (TMP) foram utilizados como co-variáveis. O grupo NP apresentou maior (p < 0,01) GMD (1,351 x 1,004 kg/dia) e PMF (441,88 x 388,88 kg) e menor (p < 0,01) TMP (68,87 x 94,20 dias, respectivamente). O ganho de peso vivo (GPV) foi semelhante (p > 0,05) entre os grupos (91,90 e 89,27 kg para NSP e NP, respectivamente). Animais que apresentaram maiores PMI foram vendidos mais cedo, obtendo menores TMP. Nos dois grupos foi observada uma tendência de queda no GMD com o aumento do TMP. Novilhos precoces obtiveram maior GMD, acarretando em um menor TMP em relação aos superprecoces. Com o aumento do TMP houve redução no GMD de ambos os grupos. Nos dois grupos, animais com maior PMI permaneceram confinados por menos tempo.    UEL2009-10-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/358810.5433/1679-0359.2009v30n3p717Semina: Ciências Agrárias; Vol. 30 No. 3 (2009); 717-726Semina: Ciências Agrárias; v. 30 n. 3 (2009); 717-7261679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3588/2905Gottschall, Carlos SantosCanellas, Leonardo CanaliMarques, Pedro RochaBittencourt, Hélio Radkeinfo:eu-repo/semantics/openAccess2015-11-19T18:38:34Zoai:ojs.pkp.sfu.ca:article/3588Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:38:34Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
Relações entre idade, peso, ganho médio diário e tempo médio de permanência de novilhos de corte confinados para abate aos 15 ou 27 meses de idade
title Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
spellingShingle Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
Gottschall, Carlos Santos
Young steers
Days on feed
Weight gain
Feedlot
Novilhos precoces
Tempo de permanência
Ganho de peso
Confinamento
title_short Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
title_full Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
title_fullStr Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
title_full_unstemmed Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
title_sort Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
author Gottschall, Carlos Santos
author_facet Gottschall, Carlos Santos
Canellas, Leonardo Canali
Marques, Pedro Rocha
Bittencourt, Hélio Radke
author_role author
author2 Canellas, Leonardo Canali
Marques, Pedro Rocha
Bittencourt, Hélio Radke
author2_role author
author
author
dc.contributor.author.fl_str_mv Gottschall, Carlos Santos
Canellas, Leonardo Canali
Marques, Pedro Rocha
Bittencourt, Hélio Radke
dc.subject.por.fl_str_mv Young steers
Days on feed
Weight gain
Feedlot
Novilhos precoces
Tempo de permanência
Ganho de peso
Confinamento
topic Young steers
Days on feed
Weight gain
Feedlot
Novilhos precoces
Tempo de permanência
Ganho de peso
Confinamento
description The main objective of this research was to evaluate the relationship between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age. Four hundred and thirty two beef steers were divided in two groups: 267 younger steers (YY), confined at 12 and slaughtered at 15 months old; and 165 young steers (YS), confined at 25 and slaughtered at 27 months of age. Beginning weight (BW) was 296.98 and 352.04 kg to YY and YS, respectively (p < 0.01). Steers were on feedlot until reach a minimum fat percentage, resulting on seven different values for DF. In the statistical analysis the BW and the DF were calculated as co-variables. YS reach higher AWG (1.351 vs 1.004 kg/day) and higher SW (441.88 vs 388.88 kg) (p < 0.01) and lower (p < 0.01) DF (66.87 and 94.20 days, respectively). Steers with higher BW were sold earlier, reaching lower DF. Both groups showed a decrease tendency of AWG as the DF increased. YS reached higher AWG, resulting in lower DF compared with YY. In both groups, while the DF increases, the AWG decreases. Steers with higher BW reached lower DF.    
publishDate 2009
dc.date.none.fl_str_mv 2009-10-22
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://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3588
10.5433/1679-0359.2009v30n3p717
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3588
identifier_str_mv 10.5433/1679-0359.2009v30n3p717
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3588/2905
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 UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 30 No. 3 (2009); 717-726
Semina: Ciências Agrárias; v. 30 n. 3 (2009); 717-726
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
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