Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/21115 |
Resumo: | The use of vegetable fat sources, such as sunflower grain, has aroused interest in the nutrition of ruminants, as it has a high level of ether extract and a high concentration of unsaturated fatty acids in its composition, which can characterize changes in the characteristics of carcass and meat. The objective of this work was to evaluate levels of inclusion of sunflower grain in the diet, on carcass characteristics and meat quality of non-castrated male cattle, finished in feedlot. 36 steers with an initial mean age of 20 months and an initial mean live weight of 292.14 ± 9.20 kg were used, originating from the crossing between the Charolais and Nellore breeds. The experimental design was completely randomized. The steers were randomly distributed in the following treatments: control (without inclusion of sunflower grain), 50, 100 and 150 grams of sunflower grain per kilogram of dry matter in the diet. The experimental diets contained a 48:52 roughage: concentrate ratio and were adjusted to be isoprotein. The inclusion of sunflower grain in the diet does not change the slaughter weight, hot and cold carcass weight, rib eye area and subcutaneous fat thickness of the carcass. Steers that received up to 150 g/kg DM in the diet show higher values for thickness of the cushion. The total fat content in the carcass has the opposite behavior as the level of inclusion of this oilseed increases. The carcass conformation showed a quadratic effect with a minimum point for inclusion of 64.84 g/kg DM of sunflower grain. The inclusion of different levels of sunflower grain changes some characteristics of the meat. In view of this, there was a quadratic effect for the variables marbling and succulence with maximum point for marbling in the inclusion of 50 g/kg DM and minimum point for succulence in the inclusion of 88.8 g/ kg DM of sunflower grain in the diet. The increase in the sunflower content in the finishing diets linearly reduces the losses of liquids to thawing and cooking, however, it produces meat of a darker color. |
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2021-06-15T12:57:13Z2021-06-15T12:57:13Z2020-02-17http://repositorio.ufsm.br/handle/1/21115The use of vegetable fat sources, such as sunflower grain, has aroused interest in the nutrition of ruminants, as it has a high level of ether extract and a high concentration of unsaturated fatty acids in its composition, which can characterize changes in the characteristics of carcass and meat. The objective of this work was to evaluate levels of inclusion of sunflower grain in the diet, on carcass characteristics and meat quality of non-castrated male cattle, finished in feedlot. 36 steers with an initial mean age of 20 months and an initial mean live weight of 292.14 ± 9.20 kg were used, originating from the crossing between the Charolais and Nellore breeds. The experimental design was completely randomized. The steers were randomly distributed in the following treatments: control (without inclusion of sunflower grain), 50, 100 and 150 grams of sunflower grain per kilogram of dry matter in the diet. The experimental diets contained a 48:52 roughage: concentrate ratio and were adjusted to be isoprotein. The inclusion of sunflower grain in the diet does not change the slaughter weight, hot and cold carcass weight, rib eye area and subcutaneous fat thickness of the carcass. Steers that received up to 150 g/kg DM in the diet show higher values for thickness of the cushion. The total fat content in the carcass has the opposite behavior as the level of inclusion of this oilseed increases. The carcass conformation showed a quadratic effect with a minimum point for inclusion of 64.84 g/kg DM of sunflower grain. The inclusion of different levels of sunflower grain changes some characteristics of the meat. In view of this, there was a quadratic effect for the variables marbling and succulence with maximum point for marbling in the inclusion of 50 g/kg DM and minimum point for succulence in the inclusion of 88.8 g/ kg DM of sunflower grain in the diet. The increase in the sunflower content in the finishing diets linearly reduces the losses of liquids to thawing and cooking, however, it produces meat of a darker color.O uso de fontes de gordura vegetal, como grão de girassol, tem despertado interesse na área de nutrição de ruminantes, por apresentar um elevado nível de extrato etéreo e alta concentração de ácidos graxos insaturados em sua composição, o que pode caracterizar mudanças nas características de carcaça e carne. Objetivou-se neste trabalho avaliar níveis de inclusão do grão de girassol na dieta, sobre características de carcaça e qualidade da carne de bovinos machos não castrados, terminadas em confinamento. Foram utilizados 36 novilhos com idade média inicial de 20 meses e peso vivo médio inicial 292,14 ± 9,20 kg, oriundos do cruzamento entre as raças Charolês e Nelore. O delineamento experimental foi o inteiramente casualizado. Os tourinhos foram aleatoriamente distribuídos nos seguintes tratamentos: controle (sem inclusão de grão de girassol), 50, 100 e 150 gramas de grão de girassol por quilograma de matéria seca da dieta. As dietas experimentais continham relação volumoso:concentrado 48:52, e foram ajustadas para serem isoproteicas. A inclusão do grão de girassol na dieta não altera o peso de abate, peso de carcaça quente e fria, área de olho de lombo e espessura de gordura subcutânea da carcaça. Os tourinhos que receberam até 150 g/kg MS na dieta apresentam valores superiores para espessura de coxão. Já o conteúdo de gordura total na carcaça apresenta comportamento inverso conforme aumenta o nível de inclusão desta oleaginosa. A conformação de carcaça apresentou efeito quadrático com ponto de mínima para inclusão de 64,84 g/kg de MS de grão de girassol. A inclusão de diferentes níveis de grão de girassol alteram algumas características da carne. Diante disto, verificou-se para as variáveis marmoreio e suculência um efeito quadrático com ponto de máxima para marmoreio na inclusão de 50 g/kg MS e ponto de mínima para a suculência na inclusão de 88,8 g/kg MS de grão de girassol na dieta. O aumento no teor de girassol nas dietas de terminação reduz linearmente as perdas de líquidos ao descongelamento e à cocção, porém, produz carne de coloração mais escura.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em ZootecniaUFSMBrasilZootecniaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessGrão de oleaginosaEspessura de gorduraExtrato etéreoMarmoreioOilseed grainFat thicknessEther extractMarblingCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAEfeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinadosEffect of the inclusion of sunflower grain on the features of confined cattle and beefinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisAlves Filho, Dari Celestinohttp://lattes.cnpq.br/2140386505744337Brondani, Ivan LuizJoner, GuilhermePizzuti, Luiz Angelo Damianhttp://lattes.cnpq.br/1897514501196643Cocco, Joziane Michelon500400000002600600600600600600e80896c6-107c-4173-83b3-2f62810c5f9cfb7baca7-0b70-4683-b91e-0592ffb90cf1443c169f-f6f1-4b00-ae9d-673e6c418c5874129e44-4853-45a6-ae88-77f18a77301608545cea-b020-45bf-94b1-762266c20255reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados |
dc.title.alternative.eng.fl_str_mv |
Effect of the inclusion of sunflower grain on the features of confined cattle and beef |
title |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados |
spellingShingle |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados Cocco, Joziane Michelon Grão de oleaginosa Espessura de gordura Extrato etéreo Marmoreio Oilseed grain Fat thickness Ether extract Marbling CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados |
title_full |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados |
title_fullStr |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados |
title_full_unstemmed |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados |
title_sort |
Efeito da inclusão do grão de girassol nas características da carcaça e carne de bovinos confinados |
author |
Cocco, Joziane Michelon |
author_facet |
Cocco, Joziane Michelon |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Alves Filho, Dari Celestino |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2140386505744337 |
dc.contributor.advisor-co1.fl_str_mv |
Brondani, Ivan Luiz |
dc.contributor.referee1.fl_str_mv |
Joner, Guilherme |
dc.contributor.referee2.fl_str_mv |
Pizzuti, Luiz Angelo Damian |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/1897514501196643 |
dc.contributor.author.fl_str_mv |
Cocco, Joziane Michelon |
contributor_str_mv |
Alves Filho, Dari Celestino Brondani, Ivan Luiz Joner, Guilherme Pizzuti, Luiz Angelo Damian |
dc.subject.por.fl_str_mv |
Grão de oleaginosa Espessura de gordura Extrato etéreo Marmoreio |
topic |
Grão de oleaginosa Espessura de gordura Extrato etéreo Marmoreio Oilseed grain Fat thickness Ether extract Marbling CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.eng.fl_str_mv |
Oilseed grain Fat thickness Ether extract Marbling |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The use of vegetable fat sources, such as sunflower grain, has aroused interest in the nutrition of ruminants, as it has a high level of ether extract and a high concentration of unsaturated fatty acids in its composition, which can characterize changes in the characteristics of carcass and meat. The objective of this work was to evaluate levels of inclusion of sunflower grain in the diet, on carcass characteristics and meat quality of non-castrated male cattle, finished in feedlot. 36 steers with an initial mean age of 20 months and an initial mean live weight of 292.14 ± 9.20 kg were used, originating from the crossing between the Charolais and Nellore breeds. The experimental design was completely randomized. The steers were randomly distributed in the following treatments: control (without inclusion of sunflower grain), 50, 100 and 150 grams of sunflower grain per kilogram of dry matter in the diet. The experimental diets contained a 48:52 roughage: concentrate ratio and were adjusted to be isoprotein. The inclusion of sunflower grain in the diet does not change the slaughter weight, hot and cold carcass weight, rib eye area and subcutaneous fat thickness of the carcass. Steers that received up to 150 g/kg DM in the diet show higher values for thickness of the cushion. The total fat content in the carcass has the opposite behavior as the level of inclusion of this oilseed increases. The carcass conformation showed a quadratic effect with a minimum point for inclusion of 64.84 g/kg DM of sunflower grain. The inclusion of different levels of sunflower grain changes some characteristics of the meat. In view of this, there was a quadratic effect for the variables marbling and succulence with maximum point for marbling in the inclusion of 50 g/kg DM and minimum point for succulence in the inclusion of 88.8 g/ kg DM of sunflower grain in the diet. The increase in the sunflower content in the finishing diets linearly reduces the losses of liquids to thawing and cooking, however, it produces meat of a darker color. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-02-17 |
dc.date.accessioned.fl_str_mv |
2021-06-15T12:57:13Z |
dc.date.available.fl_str_mv |
2021-06-15T12:57:13Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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http://repositorio.ufsm.br/handle/1/21115 |
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http://repositorio.ufsm.br/handle/1/21115 |
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500400000002 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Universidade Federal de Santa Maria Centro de Ciências Rurais |
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Programa de Pós-Graduação em Zootecnia |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Zootecnia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
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