Cull cow management and its effect on performance and carcass characteristics

Detalhes bibliográficos
Autor(a) principal: Grassi, Celso
Data de Publicação: 1991
Outros Autores: Müller, Lauro
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/3454
Resumo: Forty-four Charolais and 28 Angus cows with age ranging from seven to eleven years were randomly distributed within each breed into four treatments: T1 - open cows; T2 - pregnant cows; T3 - spayed cows and T4 - cows with IUD (Intra-Uterine Device). The experimental period lasted 185 days, beginning in November 11, 1978 and ending in May 14, 1979. Then, all the cows were slaughtered. During the experiment all the cows remained in native pasture. The average daily gain for T1, T2, T3 and T4 was: 0.307, 0.428, 0.270 and 0.276, respectively. Pregnant cows presented a higher daily gain than the other three groups (P < 0.05). No significant difference was found in all the carcass parameters studied, athough pregnant cows displayed a thicker cover of external fat. The evaluation of tenderness even by Taste Panel or through the Warner-Bratzler shear device as well flavor, juiciness and losses during thawing and cooking process, showed small and nonsignificant differences. The results of this experiment show that the finishing period should be conducted with cows that were left open.
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spelling Cull cow management and its effect on performance and carcass characteristicsEfeito do manejo de vacas de descarte no desempenho e nas características da carcaçacull; Charolais; Aberdeen Angus; pregnancy; pregnant cows; IUD; carcassdescarte; Charolês; Aberdeen Angus; vacas prenhes; prenhez; DIU; castraçãoForty-four Charolais and 28 Angus cows with age ranging from seven to eleven years were randomly distributed within each breed into four treatments: T1 - open cows; T2 - pregnant cows; T3 - spayed cows and T4 - cows with IUD (Intra-Uterine Device). The experimental period lasted 185 days, beginning in November 11, 1978 and ending in May 14, 1979. Then, all the cows were slaughtered. During the experiment all the cows remained in native pasture. The average daily gain for T1, T2, T3 and T4 was: 0.307, 0.428, 0.270 and 0.276, respectively. Pregnant cows presented a higher daily gain than the other three groups (P < 0.05). No significant difference was found in all the carcass parameters studied, athough pregnant cows displayed a thicker cover of external fat. The evaluation of tenderness even by Taste Panel or through the Warner-Bratzler shear device as well flavor, juiciness and losses during thawing and cooking process, showed small and nonsignificant differences. The results of this experiment show that the finishing period should be conducted with cows that were left open.Foram utilizadas 44 vacas da raça Charolês e vinte e oito Aberdeen Angus com idade entre sete e onze anos, distribuídas ao acaso, dentro de cada raça, em quatro tratamentos: T1 - 23 vacas vazias (não-prenhes); T2 - 17 vacas prenhes; T3 - 20 vacas castradas; T4 -12 vacas com DIU (Dispositivo Intra-Uterino). O experimento durou 185 dias, de 11 de novembro de 1978 a 14 de maio de 1979, quando as vacas foram abatidas. Os animais permaneceram em campo natural, com as vacas vazias apresentando ganho de peso médio diário de 0,307 kg; as prenhes, de 0,428 kg; as castradas, de 0,270 kg; e as com DIU, de 0,276 kg. Houve diferença significativa, ao nível de 5%, no ganho de peso das vacas prenhes em relação às dos demais tratamentos. Nas várias características das carcaças estudadas não houve diferença significativa entre os tratamentos, embora as vacas prenhes apresentassem maior espessura de gordura subcutânea. A avaliação de maciez objetiva e subjetiva e do sabor e suculência da carne, bem como das perdas verificadas no descongelamento e cocção, apresentaram diferenças pequenas e não significativas entre os tratamentos. Os resultados indicam que o período de terminação deve ser conduzido com vacas vazias.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraGrassi, CelsoMüller, Lauro1991-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/3454Pesquisa Agropecuaria Brasileira; v.26, n.8, ago. 1991; 1175-1181Pesquisa Agropecuária Brasileira; v.26, n.8, ago. 1991; 1175-11811678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/3454/787info:eu-repo/semantics/openAccess2010-06-18T16:00:13Zoai:ojs.seer.sct.embrapa.br:article/3454Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-06-18T16:00:13Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Cull cow management and its effect on performance and carcass characteristics
Efeito do manejo de vacas de descarte no desempenho e nas características da carcaça
title Cull cow management and its effect on performance and carcass characteristics
spellingShingle Cull cow management and its effect on performance and carcass characteristics
Grassi, Celso
cull; Charolais; Aberdeen Angus; pregnancy; pregnant cows; IUD; carcass
descarte; Charolês; Aberdeen Angus; vacas prenhes; prenhez; DIU; castração
title_short Cull cow management and its effect on performance and carcass characteristics
title_full Cull cow management and its effect on performance and carcass characteristics
title_fullStr Cull cow management and its effect on performance and carcass characteristics
title_full_unstemmed Cull cow management and its effect on performance and carcass characteristics
title_sort Cull cow management and its effect on performance and carcass characteristics
author Grassi, Celso
author_facet Grassi, Celso
Müller, Lauro
author_role author
author2 Müller, Lauro
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Grassi, Celso
Müller, Lauro
dc.subject.por.fl_str_mv cull; Charolais; Aberdeen Angus; pregnancy; pregnant cows; IUD; carcass
descarte; Charolês; Aberdeen Angus; vacas prenhes; prenhez; DIU; castração
topic cull; Charolais; Aberdeen Angus; pregnancy; pregnant cows; IUD; carcass
descarte; Charolês; Aberdeen Angus; vacas prenhes; prenhez; DIU; castração
description Forty-four Charolais and 28 Angus cows with age ranging from seven to eleven years were randomly distributed within each breed into four treatments: T1 - open cows; T2 - pregnant cows; T3 - spayed cows and T4 - cows with IUD (Intra-Uterine Device). The experimental period lasted 185 days, beginning in November 11, 1978 and ending in May 14, 1979. Then, all the cows were slaughtered. During the experiment all the cows remained in native pasture. The average daily gain for T1, T2, T3 and T4 was: 0.307, 0.428, 0.270 and 0.276, respectively. Pregnant cows presented a higher daily gain than the other three groups (P < 0.05). No significant difference was found in all the carcass parameters studied, athough pregnant cows displayed a thicker cover of external fat. The evaluation of tenderness even by Taste Panel or through the Warner-Bratzler shear device as well flavor, juiciness and losses during thawing and cooking process, showed small and nonsignificant differences. The results of this experiment show that the finishing period should be conducted with cows that were left open.
publishDate 1991
dc.date.none.fl_str_mv 1991-08-01
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/3454
url https://seer.sct.embrapa.br/index.php/pab/article/view/3454
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/3454/787
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.26, n.8, ago. 1991; 1175-1181
Pesquisa Agropecuária Brasileira; v.26, n.8, ago. 1991; 1175-1181
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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