Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25339 |
Resumo: | This study aimed to evaluate the growth of body components in crossbred ewe lambs fed increasing levels of dietary concentrate and to determine the optimum level of supplementation for finishing ewe production. Thirty crossbred (½ Pantaneira × ½ Texel) wool ewe lambs fed Tifton 85 hay (Cynodon spp.) and different dietary concentrate levels (20, 40, 60, and 80% DM basis) were selected for study. At the beginning of the study, six animals were slaughtered for determination of initial body composition. The remaining animals were slaughtered at approximately 48 kg live weight. The growth of body components in relation to body growth was estimated from the allometric model BC = a × (FBW)b, where BC is body component weight, a and b are growth equation parameters, and FBW is fasted body weight. Carcass, muscle, bone, and gastrointestinal tract were late maturing (b < 1, P < 0.01). Carcass and carcass fat growth was positively affected (linear, P < 0.05) by concentrate level. Total fat weight increased with increasing concentrate level (P < 0.05). The addition of up to 60% concentrate in growing ewe lamb diets is recommended for production of carcasses with early deposition of muscle and fat. The addition of 20% concentrate in ewe lab diets is sufficient for production of carcasses with maximum deposition of muscle and no excess fat. |
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Semina. Ciências Agrárias (Online) |
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Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levelsCrescimento alométrico dos componentes corporais de borregas mestiças alimentadas com níveis crescentes de concentrado na dietaAllometric coefficientBody compositionLambs.Coeficiente alométricoComposição corporalOvinos.This study aimed to evaluate the growth of body components in crossbred ewe lambs fed increasing levels of dietary concentrate and to determine the optimum level of supplementation for finishing ewe production. Thirty crossbred (½ Pantaneira × ½ Texel) wool ewe lambs fed Tifton 85 hay (Cynodon spp.) and different dietary concentrate levels (20, 40, 60, and 80% DM basis) were selected for study. At the beginning of the study, six animals were slaughtered for determination of initial body composition. The remaining animals were slaughtered at approximately 48 kg live weight. The growth of body components in relation to body growth was estimated from the allometric model BC = a × (FBW)b, where BC is body component weight, a and b are growth equation parameters, and FBW is fasted body weight. Carcass, muscle, bone, and gastrointestinal tract were late maturing (b < 1, P < 0.01). Carcass and carcass fat growth was positively affected (linear, P < 0.05) by concentrate level. Total fat weight increased with increasing concentrate level (P < 0.05). The addition of up to 60% concentrate in growing ewe lamb diets is recommended for production of carcasses with early deposition of muscle and fat. The addition of 20% concentrate in ewe lab diets is sufficient for production of carcasses with maximum deposition of muscle and no excess fat.Objetivou-se avaliar o crescimento dos componentes corporais de borregas mestiças alimentadas com níveis crescentes de concentrado na dieta e estabelecer o nível adequado de suplementação para produção de fêmeas para abate. Foram utilizadas 30 borregas lanadas, oriundas de cruzamentos com ovinos da raça Texel, alimentadas com feno de capim-Tifton 85 (Cynodon spp.) e quatro níveis de concentrado na dieta (20, 40, 60 e 80%). No início do experimento foi realizado abate para determinação da composição corporal de seis borregas. Os demais foram abatidos com aproximadamente 48 kg. Para o estudo do crescimento dos componentes em relação ao crescimento corporal dos animais foi utilizado o modelo CC = a x PCJb, onde CC = peso do componente corporal; a e b parâmetros das equações de crescimento e PCJ = peso corporal em jejum. A carcaça, músculos, ossos e trato gastrintestinal foram classificados como componentes de crescimento precoce (b < 1; P < 0,01). Foi observado efeito linear positivo dos níveis de concentrado sobre o crescimento da carcaça e gordura da carcaça (P < 0,05). A quantidade total de gordura aumentou com os níveis crescentes de inclusão de concentrado na dieta (P < 0,05). Recomenda-se a inclusão de 60% de concentrado na dieta de borregas em crescimento para produção de carcaças com precocidade para deposição de músculo e gordura. A inclusão de 20% de concentrado na dieta de borregas é o suficiente para produção de carcaças com máxima deposição de músculos e sem excesso de gordura.UEL2017-03-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2533910.5433/1679-0359.2017v38n1p391Semina: Ciências Agrárias; Vol. 38 No. 1 (2017); 391-400Semina: Ciências Agrárias; v. 38 n. 1 (2017); 391-4001679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25339/20605Copyright (c) 2017 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessOliveira, Lincoln BremmMorais, Maria da GraçaRibeiro, Caroline BertholiniSouza, Andréa Roberto Duarte LopesFernandes, Henrique JorgeÍtavo, Camila Celeste Brandão FerreiraFranco, Gumercindo LorianoWalker, Catherine CecíliaÍtavo, Luis Carlos Vinhas2022-11-29T14:46:58Zoai:ojs.pkp.sfu.ca:article/25339Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-29T14:46:58Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels Crescimento alométrico dos componentes corporais de borregas mestiças alimentadas com níveis crescentes de concentrado na dieta |
title |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels |
spellingShingle |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels Oliveira, Lincoln Bremm Allometric coefficient Body composition Lambs. Coeficiente alométrico Composição corporal Ovinos. |
title_short |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels |
title_full |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels |
title_fullStr |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels |
title_full_unstemmed |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels |
title_sort |
Allometric growth of body components in crossbred ewe lambs fed increasing dietary concentrate levels |
author |
Oliveira, Lincoln Bremm |
author_facet |
Oliveira, Lincoln Bremm Morais, Maria da Graça Ribeiro, Caroline Bertholini Souza, Andréa Roberto Duarte Lopes Fernandes, Henrique Jorge Ítavo, Camila Celeste Brandão Ferreira Franco, Gumercindo Loriano Walker, Catherine Cecília Ítavo, Luis Carlos Vinhas |
author_role |
author |
author2 |
Morais, Maria da Graça Ribeiro, Caroline Bertholini Souza, Andréa Roberto Duarte Lopes Fernandes, Henrique Jorge Ítavo, Camila Celeste Brandão Ferreira Franco, Gumercindo Loriano Walker, Catherine Cecília Ítavo, Luis Carlos Vinhas |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Lincoln Bremm Morais, Maria da Graça Ribeiro, Caroline Bertholini Souza, Andréa Roberto Duarte Lopes Fernandes, Henrique Jorge Ítavo, Camila Celeste Brandão Ferreira Franco, Gumercindo Loriano Walker, Catherine Cecília Ítavo, Luis Carlos Vinhas |
dc.subject.por.fl_str_mv |
Allometric coefficient Body composition Lambs. Coeficiente alométrico Composição corporal Ovinos. |
topic |
Allometric coefficient Body composition Lambs. Coeficiente alométrico Composição corporal Ovinos. |
description |
This study aimed to evaluate the growth of body components in crossbred ewe lambs fed increasing levels of dietary concentrate and to determine the optimum level of supplementation for finishing ewe production. Thirty crossbred (½ Pantaneira × ½ Texel) wool ewe lambs fed Tifton 85 hay (Cynodon spp.) and different dietary concentrate levels (20, 40, 60, and 80% DM basis) were selected for study. At the beginning of the study, six animals were slaughtered for determination of initial body composition. The remaining animals were slaughtered at approximately 48 kg live weight. The growth of body components in relation to body growth was estimated from the allometric model BC = a × (FBW)b, where BC is body component weight, a and b are growth equation parameters, and FBW is fasted body weight. Carcass, muscle, bone, and gastrointestinal tract were late maturing (b < 1, P < 0.01). Carcass and carcass fat growth was positively affected (linear, P < 0.05) by concentrate level. Total fat weight increased with increasing concentrate level (P < 0.05). The addition of up to 60% concentrate in growing ewe lamb diets is recommended for production of carcasses with early deposition of muscle and fat. The addition of 20% concentrate in ewe lab diets is sufficient for production of carcasses with maximum deposition of muscle and no excess fat. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03-02 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica de Campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25339 10.5433/1679-0359.2017v38n1p391 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25339 |
identifier_str_mv |
10.5433/1679-0359.2017v38n1p391 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25339/20605 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
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. 38 No. 1 (2017); 391-400 Semina: Ciências Agrárias; v. 38 n. 1 (2017); 391-400 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_ |
1799306075781988352 |