Relationships between age, weight, average weight gain and days on feed of beef steers slaughtered at 15 or 27 months of age
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
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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Semina. Ciências Agrárias (Online) |
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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 |
_version_ |
1799306059779670016 |