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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
22/01/2014 |
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Data da última atualização: |
12/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARROS, P. A. V.; GLORIA, M. B. A.; LOPES, F. C. F.; GAMA, M. A. S. da; SOUZA, S. M.; MOURTHÉ, M. H. F.; LEÃO, M. I. |
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Afiliação: |
UFMG; UFMG; FERNANDO CESAR FERRAZ LOPES, CNPGL; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; UNIVERSITY OF ABERDEEN; UFVJM; UFV. |
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Título: |
Qualidade nutricional e estabilidade oxidativa de manteigas produzidas do leite de vacas alimentadas com cana-de-açucar suplementada com óleo de girassol. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, v. 65, n. 5, p. 1545-1553, 2013. |
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DOI: |
https://doi.org/10.1590/S0102-09352013000500036 |
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Idioma: |
Português |
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Conteúdo: |
RESUMO - O objetivo deste estudo foi avaliar o perfil de ácidos graxos (AG), os índices de qualidade nutricional e a estabilidade oxidativa (EO) de manteigas produzidas do leite de vacas alimentadas com dietas à base de cana-de-açúcar contendo níveis crescentes de óleo de girassol (OG): 0 (controle); 1,5; 3,0 e 4,5% da matéria seca (MS). O perfil de AG das manteigas foi analisado por cromatografia gasosa, e a EO foi determinada utilizando-se o equipamento Rancimat®, modelo 743, operado a 120ºC e fluxo de ar de 20L/h. As concentrações dos AG rumênico (CLA cis-9, trans-11), vacênico (C18:1 trans-11) e oleico (C18:1 cis-9) na gordura das manteigas foram aumentadas em 867, 687 e 148%, respectivamente, à medida que se aumentou de 0 para 4,5% o nível de OG na dieta. Por outro lado, as concentrações dos AG saturados de cadeia média foram linearmente reduzidas (P<0,0001) na gordura das manteigas, em razão do incremento de OG nas dietas. Quanto aos índices de qualidade nutricional, houve redução linear (P<0,0001) no índice de aterogenicidade e no de trombogenicidade e aumento da relação entre AG hipo e hipercolesterolêmicos, em resposta ao aumento do nível de OG na dieta. Consistente com o incremento (P<0,0001) nas concentrações totais dos AG mono e poli-insaturados, a EO da gordura das manteigas foi linearmente reduzida (P<0,0001) em razão do incremento de OG nas dietas. Concluiu-se que a suplementação com OG melhorou a qualidade nutricional das manteigas produzidas do leite de vacas Holandês x Gir devido a mudanças positivas no perfil de AG da gordura. Entretanto, tais mudanças na composição dos AG da gordura foram acompanhadas de redução da EO das manteigas, associada à menor vida de prateleira. ABSTRACT - The objective of this study was to evaluate the fatty acid (FA) profile, nutritional quality and oxidative stability (OE) indexes of butter obtained from milk of cows fed sugar cane-based diets containing increasing levels of sunflower oil (SO): 0 (Control); 1.5; 3.0 and 4.5% of diet DM. The butter FA profile was analyzed by gas chromatography and OE was determined using the Rancimat® equipment (model 743) operated at 120ºC and air flow of 20 L/h. The concentrations of rumenic acid (cis-9 trans-11 CLA), vaccenic acid (trans-11 C18:1) and oleic acid (cis-9 C18:1) in butter fat were increased by 867, 687 and 148%, respectively, as the dietary SO level increased from 0 to 4.5%. In contrast, the concentrations of medium chain saturated FA were linearly reduced (P<0.05) in butter fat from cows fed increasing levels of SO. Regarding the butter nutritional quality, a linear decrease (P<0.0001) in atherogenicity and thrombogenicity indexes and a linear increase (P<0.0001) in the hypocholesterolemic/hypercholesterolemic ratio were observed compared to control, 1.5, 3.0 and 4.5% SO, respectively. Consistent with the increased (P<0.0001) concentration of mono and polyunsaturated FA, the OE of butter fat was linearly reduced (P<0.0001) as the dietary SO level increased. It was concluded that diet supplementation with SO improved the nutritional quality of butter fat of Holstein x Gir dairy cows as a result of positive changes in milk FA profile. However, these changes in milk FA composition were accompanied by a reduction in the SO of butter, which in turn is associated with a shorter shelf life. MenosRESUMO - O objetivo deste estudo foi avaliar o perfil de ácidos graxos (AG), os índices de qualidade nutricional e a estabilidade oxidativa (EO) de manteigas produzidas do leite de vacas alimentadas com dietas à base de cana-de-açúcar contendo níveis crescentes de óleo de girassol (OG): 0 (controle); 1,5; 3,0 e 4,5% da matéria seca (MS). O perfil de AG das manteigas foi analisado por cromatografia gasosa, e a EO foi determinada utilizando-se o equipamento Rancimat®, modelo 743, operado a 120ºC e fluxo de ar de 20L/h. As concentrações dos AG rumênico (CLA cis-9, trans-11), vacênico (C18:1 trans-11) e oleico (C18:1 cis-9) na gordura das manteigas foram aumentadas em 867, 687 e 148%, respectivamente, à medida que se aumentou de 0 para 4,5% o nível de OG na dieta. Por outro lado, as concentrações dos AG saturados de cadeia média foram linearmente reduzidas (P<0,0001) na gordura das manteigas, em razão do incremento de OG nas dietas. Quanto aos índices de qualidade nutricional, houve redução linear (P<0,0001) no índice de aterogenicidade e no de trombogenicidade e aumento da relação entre AG hipo e hipercolesterolêmicos, em resposta ao aumento do nível de OG na dieta. Consistente com o incremento (P<0,0001) nas concentrações totais dos AG mono e poli-insaturados, a EO da gordura das manteigas foi linearmente reduzida (P<0,0001) em razão do incremento de OG nas dietas. Concluiu-se que a suplementação com OG melhorou a qualidade nutricional das manteigas produzidas do leite de vaca... Mostrar Tudo |
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Palavras-Chave: |
CLA; Produto lácteo; Rancidez oxidativa; Saúde humana. |
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Thesagro: |
Ácido Graxo. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/977017/1/Qualidade-nutricional-e-estabilidade-oxidativa-de-manteigas.pdf
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Marc: |
LEADER 04304naa a2200265 a 4500
001 1977017
005 2022-08-12
008 2013 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0102-09352013000500036$2DOI
100 1 $aBARROS, P. A. V.
245 $aQualidade nutricional e estabilidade oxidativa de manteigas produzidas do leite de vacas alimentadas com cana-de-açucar suplementada com óleo de girassol.$h[electronic resource]
260 $c2013
520 $aRESUMO - O objetivo deste estudo foi avaliar o perfil de ácidos graxos (AG), os índices de qualidade nutricional e a estabilidade oxidativa (EO) de manteigas produzidas do leite de vacas alimentadas com dietas à base de cana-de-açúcar contendo níveis crescentes de óleo de girassol (OG): 0 (controle); 1,5; 3,0 e 4,5% da matéria seca (MS). O perfil de AG das manteigas foi analisado por cromatografia gasosa, e a EO foi determinada utilizando-se o equipamento Rancimat®, modelo 743, operado a 120ºC e fluxo de ar de 20L/h. As concentrações dos AG rumênico (CLA cis-9, trans-11), vacênico (C18:1 trans-11) e oleico (C18:1 cis-9) na gordura das manteigas foram aumentadas em 867, 687 e 148%, respectivamente, à medida que se aumentou de 0 para 4,5% o nível de OG na dieta. Por outro lado, as concentrações dos AG saturados de cadeia média foram linearmente reduzidas (P<0,0001) na gordura das manteigas, em razão do incremento de OG nas dietas. Quanto aos índices de qualidade nutricional, houve redução linear (P<0,0001) no índice de aterogenicidade e no de trombogenicidade e aumento da relação entre AG hipo e hipercolesterolêmicos, em resposta ao aumento do nível de OG na dieta. Consistente com o incremento (P<0,0001) nas concentrações totais dos AG mono e poli-insaturados, a EO da gordura das manteigas foi linearmente reduzida (P<0,0001) em razão do incremento de OG nas dietas. Concluiu-se que a suplementação com OG melhorou a qualidade nutricional das manteigas produzidas do leite de vacas Holandês x Gir devido a mudanças positivas no perfil de AG da gordura. Entretanto, tais mudanças na composição dos AG da gordura foram acompanhadas de redução da EO das manteigas, associada à menor vida de prateleira. ABSTRACT - The objective of this study was to evaluate the fatty acid (FA) profile, nutritional quality and oxidative stability (OE) indexes of butter obtained from milk of cows fed sugar cane-based diets containing increasing levels of sunflower oil (SO): 0 (Control); 1.5; 3.0 and 4.5% of diet DM. The butter FA profile was analyzed by gas chromatography and OE was determined using the Rancimat® equipment (model 743) operated at 120ºC and air flow of 20 L/h. The concentrations of rumenic acid (cis-9 trans-11 CLA), vaccenic acid (trans-11 C18:1) and oleic acid (cis-9 C18:1) in butter fat were increased by 867, 687 and 148%, respectively, as the dietary SO level increased from 0 to 4.5%. In contrast, the concentrations of medium chain saturated FA were linearly reduced (P<0.05) in butter fat from cows fed increasing levels of SO. Regarding the butter nutritional quality, a linear decrease (P<0.0001) in atherogenicity and thrombogenicity indexes and a linear increase (P<0.0001) in the hypocholesterolemic/hypercholesterolemic ratio were observed compared to control, 1.5, 3.0 and 4.5% SO, respectively. Consistent with the increased (P<0.0001) concentration of mono and polyunsaturated FA, the OE of butter fat was linearly reduced (P<0.0001) as the dietary SO level increased. It was concluded that diet supplementation with SO improved the nutritional quality of butter fat of Holstein x Gir dairy cows as a result of positive changes in milk FA profile. However, these changes in milk FA composition were accompanied by a reduction in the SO of butter, which in turn is associated with a shorter shelf life.
650 $aÁcido Graxo
653 $aCLA
653 $aProduto lácteo
653 $aRancidez oxidativa
653 $aSaúde humana
700 1 $aGLORIA, M. B. A.
700 1 $aLOPES, F. C. F.
700 1 $aGAMA, M. A. S. da
700 1 $aSOUZA, S. M.
700 1 $aMOURTHÉ, M. H. F.
700 1 $aLEÃO, M. I.
773 $tArquivo Brasileiro de Medicina Veterinária e Zootecnia$gv. 65, n. 5, p. 1545-1553, 2013.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
11/02/2003 |
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Data da última atualização: |
25/08/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
ARAÚJO, M. R. A. de; COULMAN, B. E. |
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Afiliação: |
CNPC; GRICULTURE AND AGRI-FOOD CANADA, SASKATOON RESEARCH CENTRE, AGRICULTURE AND AGRI-FOOD CANADA, SASKATOON RESEARCH CENTRE. |
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Título: |
Genetic variation, heritability and progeny testing in meadow bromegrass. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Plant Breeding, v. 121, n. 5, p. 417-424, Oct. 2002. |
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DOI: |
10.1046/j.1439-0523.2002.739124.x |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract - Meadow bromegrass is a recently introduced pasture grass in western Canada. Its leafy production and rapid regrowth have made it a major grass species for pasturing beef animals in this region. Because relatively little breeding work has been done on this species, there is little information on its breeding behaviour. The main objective of this study was to estimate genetic parameters and assess breeding methodologies for meadow bromegrass. Forty half-sib (polycross and open-pollinated) and full-sib (selfed) progenies were evaluated for dry matter and seed yield, fertility index, harvest index, plant height, plant spread, crude protein, neutral detergent fibre and acid detergent fibre. Genetic variation for seed yield, harvest index, and plant height was significant in the open-pollinated and selfed tests. Genetic variation estimates for dry matter yield were negative (polycross), not significant (open-pollinated), or significant (selfed). Estimates of genetic variation for quality traits were not significant, except for acid detergent fibre (selfed). Correlations among characters indicated that it is possible to simultaneously improve seed and forage yield. Rankings of progenies by the half-sib tests for forage and seed yield were not altered by the use of the synthetic parental value (SVi), which includes information from selfed progeny. The polycross progeny test did not discriminate parents as well as the open-pollinated and selfed tests; this may have been a result of non-random pollination in the polycross. Correlation among the progeny tests, showed that open-pollinated and selfed progeny tests agreed for all characters, except for harvest index, while correlation between polycross and selfed tests were significant for six characters but not dry matter yield, and acid and neutral detergent fibres. The most dissimilar tests were polycross and open-pollinated, with significant correlations found only for fertility index, height, spread and neutral detergent fibre. It was concluded that there was significant variation and moderate heritability for most traits in the meadow bromegrass populations evaluated, and that the open-pollinated progeny test is the method of choice for selecting parents for synthetics of this species. MenosAbstract - Meadow bromegrass is a recently introduced pasture grass in western Canada. Its leafy production and rapid regrowth have made it a major grass species for pasturing beef animals in this region. Because relatively little breeding work has been done on this species, there is little information on its breeding behaviour. The main objective of this study was to estimate genetic parameters and assess breeding methodologies for meadow bromegrass. Forty half-sib (polycross and open-pollinated) and full-sib (selfed) progenies were evaluated for dry matter and seed yield, fertility index, harvest index, plant height, plant spread, crude protein, neutral detergent fibre and acid detergent fibre. Genetic variation for seed yield, harvest index, and plant height was significant in the open-pollinated and selfed tests. Genetic variation estimates for dry matter yield were negative (polycross), not significant (open-pollinated), or significant (selfed). Estimates of genetic variation for quality traits were not significant, except for acid detergent fibre (selfed). Correlations among characters indicated that it is possible to simultaneously improve seed and forage yield. Rankings of progenies by the half-sib tests for forage and seed yield were not altered by the use of the synthetic parental value (SVi), which includes information from selfed progeny. The polycross progeny test did not discriminate parents as well as the open-pollinated and selfed tests; this may have been a ... Mostrar Tudo |
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Palavras-Chave: |
Herdabilidade. |
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Thesagro: |
Festuca Arundinacea; Genética Vegetal; Lolium Perenne; Melhoramento Genético Vegetal; Teste de Progênie; Variação Genética. |
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Thesaurus NAL: |
Bromus riparius; Forage yield; Genetic variation; Heritability; Plant genetics; Progeny testing; Seed yield. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 03207naa a2200313 a 4500
001 1528986
005 2023-08-25
008 2002 bl uuuu u00u1 u #d
024 7 $a10.1046/j.1439-0523.2002.739124.x$2DOI
100 1 $aARAÚJO, M. R. A. de
245 $aGenetic variation, heritability and progeny testing in meadow bromegrass.$h[electronic resource]
260 $c2002
520 $aAbstract - Meadow bromegrass is a recently introduced pasture grass in western Canada. Its leafy production and rapid regrowth have made it a major grass species for pasturing beef animals in this region. Because relatively little breeding work has been done on this species, there is little information on its breeding behaviour. The main objective of this study was to estimate genetic parameters and assess breeding methodologies for meadow bromegrass. Forty half-sib (polycross and open-pollinated) and full-sib (selfed) progenies were evaluated for dry matter and seed yield, fertility index, harvest index, plant height, plant spread, crude protein, neutral detergent fibre and acid detergent fibre. Genetic variation for seed yield, harvest index, and plant height was significant in the open-pollinated and selfed tests. Genetic variation estimates for dry matter yield were negative (polycross), not significant (open-pollinated), or significant (selfed). Estimates of genetic variation for quality traits were not significant, except for acid detergent fibre (selfed). Correlations among characters indicated that it is possible to simultaneously improve seed and forage yield. Rankings of progenies by the half-sib tests for forage and seed yield were not altered by the use of the synthetic parental value (SVi), which includes information from selfed progeny. The polycross progeny test did not discriminate parents as well as the open-pollinated and selfed tests; this may have been a result of non-random pollination in the polycross. Correlation among the progeny tests, showed that open-pollinated and selfed progeny tests agreed for all characters, except for harvest index, while correlation between polycross and selfed tests were significant for six characters but not dry matter yield, and acid and neutral detergent fibres. The most dissimilar tests were polycross and open-pollinated, with significant correlations found only for fertility index, height, spread and neutral detergent fibre. It was concluded that there was significant variation and moderate heritability for most traits in the meadow bromegrass populations evaluated, and that the open-pollinated progeny test is the method of choice for selecting parents for synthetics of this species.
650 $aBromus riparius
650 $aForage yield
650 $aGenetic variation
650 $aHeritability
650 $aPlant genetics
650 $aProgeny testing
650 $aSeed yield
650 $aFestuca Arundinacea
650 $aGenética Vegetal
650 $aLolium Perenne
650 $aMelhoramento Genético Vegetal
650 $aTeste de Progênie
650 $aVariação Genética
653 $aHerdabilidade
700 1 $aCOULMAN, B. E.
773 $tPlant Breeding$gv. 121, n. 5, p. 417-424, Oct. 2002.
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