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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
22/04/2019 |
Data da última atualização: |
24/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MOURTHÉ, M. H. F.; LOPES, F. C. F.; REIS, R. B.; GAMA, M. A. S. da; MORENZ, M. J. F.; SALOMÃO, B. M. |
Afiliação: |
MÁRIO HENRIQUE FRANÇA MOURTHÉ, UFMG; FERNANDO CESAR FERRAZ LOPES, CNPGL; RONALDO BRAGA REIS, UFMG; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL; BERNARDO MURTA SALOMÃO, BMS Consultoria. |
Título: |
Ruminal metabolic parameters and milk fatty acid profile of cows grazing Marandu grass supplemented with roasted soybeans. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Semina: Ciências Agrárias, Londrina, v. 40, n. 2, p. 745-766, mar./abr. 2019. |
DOI: |
10.5433/1679-0359.2019v40n2p745 |
Idioma: |
Inglês |
Conteúdo: |
Abstract The goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day-1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day-1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roasted soybeans (as-fed basis), which were the experimental treatments. The inclusion of roasted soybeans promoted a linear reduction in the acetate concentration, with no effect on the pH and ruminal ammonia N concentration. There was no effect of the treatments on the ruminal degradability of the dry matter and neutral detergent fiber of Marandu grass or on the kinetic parameters of the fluids in the rumen. There were linear increases in the contents of fat and total solids in the milk and a linear decrease in the milk lactose content, but there was no effect of the treatments on the yield of these components or on milk yield. There were linear increases in milk fat stearic, elaidic, oleic, linoleic and α-linolenic acidis contents, but there was no effect of the treatments on the milk fat contents of vaccenic and rumenic acids. Notably, supplementing Marandu grass with a concentrate containing up to 3.9 kg of roasted soybeans improved the nutritional quality of the milk fat due to increases in the milk fat contents of oleic and α-linolenic acids, which are considered beneficial to human health, and reductions in the levels of lauric, myristic and palmitic, which are considered hypercholesterolemic fatty acids. MenosAbstract The goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day-1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day-1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roasted soybeans (as-fed basis), which were the experimental treatments. The inclusion of roasted soybeans promoted a linear reduction in the acetate concentration, with no effect on the pH and ruminal ammonia N concentration. There was no effect of the treatments on the ruminal degradability of the dry matter and neutral detergent fiber of Marandu grass or on the kinetic parameters of the fluids in the rumen. There were linear increases in the contents of fat and total solids in the milk and a linear decrease in the milk lactose content, but there was no effect of the treatments on the yield of these components or on milk yield. There were linear increases in milk fat stearic, elaidic, oleic, linoleic and α-linolenic acidis contents, but there was no effect of the treatments on the milk fat contents of vaccenic and rumenic acids. Notably, supplementing Marandu grass with a concentrate containing up to 3.9 kg of roasted soybeans improved the nutritional quality of the milk fat due to increases in the milk fat contents of oleic and α-linolenic acids, whi... Mostrar Tudo |
Palavras-Chave: |
Rumenic acid; Ruminal metabolite. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/201184/1/Ruminal-metabolic-parameters-and-milk-fatty-acid-profile-of-cows...-Fernando-2019.pdf
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Marc: |
LEADER 02393naa a2200217 a 4500 001 2108380 005 2023-01-24 008 2019 bl uuuu u00u1 u #d 024 7 $a10.5433/1679-0359.2019v40n2p745$2DOI 100 1 $aMOURTHÉ, M. H. F. 245 $aRuminal metabolic parameters and milk fatty acid profile of cows grazing Marandu grass supplemented with roasted soybeans.$h[electronic resource] 260 $c2019 520 $aAbstract The goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day-1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day-1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roasted soybeans (as-fed basis), which were the experimental treatments. The inclusion of roasted soybeans promoted a linear reduction in the acetate concentration, with no effect on the pH and ruminal ammonia N concentration. There was no effect of the treatments on the ruminal degradability of the dry matter and neutral detergent fiber of Marandu grass or on the kinetic parameters of the fluids in the rumen. There were linear increases in the contents of fat and total solids in the milk and a linear decrease in the milk lactose content, but there was no effect of the treatments on the yield of these components or on milk yield. There were linear increases in milk fat stearic, elaidic, oleic, linoleic and α-linolenic acidis contents, but there was no effect of the treatments on the milk fat contents of vaccenic and rumenic acids. Notably, supplementing Marandu grass with a concentrate containing up to 3.9 kg of roasted soybeans improved the nutritional quality of the milk fat due to increases in the milk fat contents of oleic and α-linolenic acids, which are considered beneficial to human health, and reductions in the levels of lauric, myristic and palmitic, which are considered hypercholesterolemic fatty acids. 653 $aRumenic acid 653 $aRuminal metabolite 700 1 $aLOPES, F. C. F. 700 1 $aREIS, R. B. 700 1 $aGAMA, M. A. S. da 700 1 $aMORENZ, M. J. F. 700 1 $aSALOMÃO, B. M. 773 $tSemina: Ciências Agrárias, Londrina$gv. 40, n. 2, p. 745-766, mar./abr. 2019.
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Embrapa Gado de Leite (CNPGL) |
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Registros recuperados : 5 | |
1. | | LOPES, F. C. F.; MOURTHÉ, M. H. F.; REIS, R. B.; GAMA, M. A. S. da; DORNELLAS, R. A. de C.; SALOMÃO, B. M. Produção e composição do leite de vacas Holandês x Gir manejadas em pastagem de Brachiaria suplementada cm níveis crescentes de grãos de soja tostado. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 48., 2011, Belém, PA. O desenvolvimento da produção animal e a responsabilidade frente a novos desafios: anais. Belém, PA: SBZ, 2011. 3 p. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Leite. |
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2. | | MOURTHÉ, M. H. F.; LOPES, F. C. F.; REIS, R. B.; GAMA, M. A. S. da; MORENZ, M. J. F.; SALOMÃO, B. M. Ruminal metabolic parameters and milk fatty acid profile of cows grazing Marandu grass supplemented with roasted soybeans. Semina: Ciências Agrárias, Londrina, v. 40, n. 2, p. 745-766, mar./abr. 2019.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Gado de Leite. |
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3. | | MOURTHE, M. H. F.; LOPES, F. C. F.; REIS, R. B.; SALOMÃO, B. M.; SOARES, F. N.; GAMA, M. A. S. da; REIS, L. G.; ALEVATO, C. B. Metabolitos sanguineos de vacas holandes x gir em lactação manejadas em pastagens de Brachiaria suplementada com quantidades crescentes de grão de soja tostado. In: CONGRESSO BRASILEIRO DE ZOOTECNIA, 22., 2012, Cuiabá. A importância da zootecnia para a segurança alimentar: [anais]. Cuiabá: Universidade Federal de Mato Grosso, 2012.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Leite. |
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4. | | MOURTHE, M. H. F.; LOPES, F. C. F.; REIS, R. B.; SALOMÃO, B. M.; ALVES, F. J. L.; GAMA, M. A. S. da; FERNANDES, V. C.; DUQUE, A. C. A. Consumo de matéria seca e nutrientes em vacas holandes x gir manejadas em pastagem de Brachiaria suplementado com quantidades crescentes de grão de soja tostado. In: CONGRESSO BRASILEIRO DE ZOOTECNIA, 22., 2012, Cuiabá. A importância da zootecnia para a segurança alimentar: [anais]. Cuiabá: Universidade Federal de Mato Grosso, 2012.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Leite. |
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5. | | LOPES, F. C. F.; MOURTHE, M. H. F.; REIS, R. B.; GAMA, M. A. S. da; SALOMÃO, B. M.; ALEVATO, C. B.; ALMEIDA, M. M. DE; REIS, L. G. DOS. Perfil dos ácidos graxos do leite de vacas Holandês x Gir em pastagem de Brachiaria brizantha cv. Marandu suplementada com quantidades crescentes de grão de soja tostado. In: CONGRESSO INTERNACIONAL DO LEITE, 11.; WORKSHOP DE POLÍTICAS PÚBLICAS, 11.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 12., 2012, Goiânia. Anais... Juiz de Fora: Embrapa Gado de Leite, 2012.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Leite. |
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Registros recuperados : 5 | |
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