| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
12/12/2012 |
|
Data da última atualização: |
09/02/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
OLIVEIRA, D. E.; GAMA, M. A. S. da; FERNANDES, D.; TEDESCHI, L. O.; BAUMAN, D. E. |
|
Afiliação: |
D. E. OLIVEIRA, UESC; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; D. FERNANDES, UESC; L. O. TEDESCHI, UNIVERSIDADE DO TEXAS; D. E. BAUMAN, CORNELL. |
|
Título: |
An protected conjugeted linoleic acid supplement decrease milk production and secretion of milk components in grazing dairy ewes. |
|
Ano de publicação: |
2012 |
|
Fonte/Imprenta: |
Journal of Dairy Science, v. 95, n. 3, p. 1437-1446, 2012 |
|
DOI: |
https://doi.org/10.3168/jds.2011-4618 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Feeding conjugated linoleic acid (CLA) in a rumen-inert form to dairy ewes has been shown to increase milk production, alter milk composition, and increase the milk fat CLA content. However, few studies have tested ruminally unprotected CLA sources. The objective of this study was to evaluate the effects of an unprotected CLA supplement (29.8% of cis-9,trans-11 and 29.9% of trans-10,cis-12 isomers as methyl esters) on milk yield and composition of dairy ewes. Twenty-four lactating Lacaune ewes were used in a crossover design and received 2 dietary treatments: (1) control: basal diet containing no supplemental lipid and (2) basal diet plus CLA (30 g/d). The CLA supplement was mixed into the concentrate and fed in 2 equal meals after morning and afternoon milkings. Each experimental period consisted of 21 d: 7 d for adaptation and 14 d for data collection. The CLA supplement decreased milk fat content and yield by 31.3 and 38.0%, respectively. Milk yield and secretion of milk lactose and protein were decreased by 8.0, 9.8, and 5.6%, respectively. On the other hand, milk protein content and linear SCC score were 1.8 and 17.7% higher in ewes fed the CLA supplement. The concentration of milk fatty acids originating from de novo synthesis (C16) was increased by 22.6% in ewes fed the CLA supplement. The CLA supplement decreased C14:1/C14:0, C16:1/C16:0, and C18:1/C18:0 desaturase indexes by 25, 18.7, and 0.1%, respectively, but increased the cis-9,trans-11 CLA/trans-11 C18:1 ratio by 8.6%. The concentrations of trans-10,cis-12 CLA and cis-9,trans-11 CLA in milk fat was 309 and 33.4% higher in ewes fed CLA. Pronounced milk fat depression coupled with the deleterious effects on milk yield, milk SCC, and secretion of all milk solids observed in ewes fed an unprotected CLA supplement is likely to be associated with high doses of trans-10,cis-12 CLA reaching the mammary gland, corroborating previous results obtained with dairy cows. MenosFeeding conjugated linoleic acid (CLA) in a rumen-inert form to dairy ewes has been shown to increase milk production, alter milk composition, and increase the milk fat CLA content. However, few studies have tested ruminally unprotected CLA sources. The objective of this study was to evaluate the effects of an unprotected CLA supplement (29.8% of cis-9,trans-11 and 29.9% of trans-10,cis-12 isomers as methyl esters) on milk yield and composition of dairy ewes. Twenty-four lactating Lacaune ewes were used in a crossover design and received 2 dietary treatments: (1) control: basal diet containing no supplemental lipid and (2) basal diet plus CLA (30 g/d). The CLA supplement was mixed into the concentrate and fed in 2 equal meals after morning and afternoon milkings. Each experimental period consisted of 21 d: 7 d for adaptation and 14 d for data collection. The CLA supplement decreased milk fat content and yield by 31.3 and 38.0%, respectively. Milk yield and secretion of milk lactose and protein were decreased by 8.0, 9.8, and 5.6%, respectively. On the other hand, milk protein content and linear SCC score were 1.8 and 17.7% higher in ewes fed the CLA supplement. The concentration of milk fatty acids originating from de novo synthesis (C16) was increased by 22.6% in ewes fed the CLA supplement. The CLA supplement decreased C14:1/C14:0, C16:1/C16:0, and C18:1/C18:0 des... Mostrar Tudo |
|
Palavras-Chave: |
Depressão de gordura do leite; Ovelha lacaune; Produção de leite. |
|
Thesagro: |
Glândula Mamaria. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 02837naa a2200229 a 4500
001 1942248
005 2024-02-09
008 2012 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3168/jds.2011-4618$2DOI
100 1 $aOLIVEIRA, D. E.
245 $aAn protected conjugeted linoleic acid supplement decrease milk production and secretion of milk components in grazing dairy ewes.$h[electronic resource]
260 $c2012
520 $aFeeding conjugated linoleic acid (CLA) in a rumen-inert form to dairy ewes has been shown to increase milk production, alter milk composition, and increase the milk fat CLA content. However, few studies have tested ruminally unprotected CLA sources. The objective of this study was to evaluate the effects of an unprotected CLA supplement (29.8% of cis-9,trans-11 and 29.9% of trans-10,cis-12 isomers as methyl esters) on milk yield and composition of dairy ewes. Twenty-four lactating Lacaune ewes were used in a crossover design and received 2 dietary treatments: (1) control: basal diet containing no supplemental lipid and (2) basal diet plus CLA (30 g/d). The CLA supplement was mixed into the concentrate and fed in 2 equal meals after morning and afternoon milkings. Each experimental period consisted of 21 d: 7 d for adaptation and 14 d for data collection. The CLA supplement decreased milk fat content and yield by 31.3 and 38.0%, respectively. Milk yield and secretion of milk lactose and protein were decreased by 8.0, 9.8, and 5.6%, respectively. On the other hand, milk protein content and linear SCC score were 1.8 and 17.7% higher in ewes fed the CLA supplement. The concentration of milk fatty acids originating from de novo synthesis (<C16) was decreased by 25%, whereas the concentration of milk fatty acids taken up preformed from the plasma (>C16) was increased by 22.6% in ewes fed the CLA supplement. The CLA supplement decreased C14:1/C14:0, C16:1/C16:0, and C18:1/C18:0 desaturase indexes by 25, 18.7, and 0.1%, respectively, but increased the cis-9,trans-11 CLA/trans-11 C18:1 ratio by 8.6%. The concentrations of trans-10,cis-12 CLA and cis-9,trans-11 CLA in milk fat was 309 and 33.4% higher in ewes fed CLA. Pronounced milk fat depression coupled with the deleterious effects on milk yield, milk SCC, and secretion of all milk solids observed in ewes fed an unprotected CLA supplement is likely to be associated with high doses of trans-10,cis-12 CLA reaching the mammary gland, corroborating previous results obtained with dairy cows.
650 $aGlândula Mamaria
653 $aDepressão de gordura do leite
653 $aOvelha lacaune
653 $aProdução de leite
700 1 $aGAMA, M. A. S. da
700 1 $aFERNANDES, D.
700 1 $aTEDESCHI, L. O.
700 1 $aBAUMAN, D. E.
773 $tJournal of Dairy Science$gv. 95, n. 3, p. 1437-1446, 2012
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 39 | |
| 3. |  | OLIVEIRA, D. E. C. de; OLIVEIRA, C. M. de; FRIZZAS, M. R.; DUARTE, G. C. M. Diversidade de espécies de algumas ordens de insecta em área de Cerrado e agrícola no Distrito Federal. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 22., 2008, Uberlândia. Ciência, tecnologia e inovação: anais. Viçosa, MG: UFV, 2008. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
|   |
| 7. | | LACORTE, C.; ARAGAO, F.; MANSUR, E.; OLIVEIRA, D. E.; CORDEIRO, A. R.; RECH, E. Evaluation of peanut (Arachis hypogaea L.) tissues for particle bombardment-mediated gene transfer. In: ENCONTRO BRASILEIRO DE BIOTECNOLOGIA VEGETAL, 1., 1993, Brasilia. Programas e resumos. Brasilia: EMBRAPA-CENARGEN, 1993. Poster 029. Resumo.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
| |
| 9. | | OLIVEIRA, D. E.; MEDEIROS, S. R. de; LANNA, D. P. D. Nitrogen balance and excretion from grazing lactating cows supplemented with conjugated linoleic acid (CLA). In: ADSA-PSA-AMPA-ASAS JOINT ANNUAL MEETING, 2008, Indianapolis. Abstracts. Indianapolis: ADSA: ASAS, 2008. Disponível em:< http://adsa.asas.org/meetings/2008/abstracts/TOC.htm > Acesso em: 26 mar. 2009. Publicado em: Journal of Animal Science, Champaign, v. 86, E-Supplement 2; Journal of Dairy Science, Champaign, v. 91, E-Supplement 1. P. 487 1 CD-ROM. Ruminant Nutrition: proteins and amino acids - Dairy. O485. Trabalho TH253.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
| |
| 11. | | GAMA, M. A. S. da; OLIVEIRA, D. E.; FERNANDES, D.; SOUZA, J. de; BRUSCHI, J. H. An unprotected conjugated linoleic acid (CLA) supplement reduces milk fat synthesis and forage intake in lactating goats. In: INTERNATIONAL SYMPOSIUM ON RUMINANT PHYSIOLOGY, 11., 2009, Clermont-Ferrand. Ruminant physiology: digestion, metabolism, and effects of nutrition on reproduction and welfare: proceedings. Clermont-Ferrand: Wageningen Academic Publishers, 2009. p. 514-515.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Gado de Leite. |
|  |
| 12. | | BALDIN, M.; DRESCH, R.; SOUZA, F.; FERNANDES, D.; GAMA, M. A. S. da; HARVATINE, K. J.; OLIVEIRA, D. E. CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats. Small Ruminant Research, v. 116, n. 1, p. 44-50, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| 14. | | FRIZZAS, M. R.; OLIVEIRA, C. M. de; OLIVEIRA, D. E. C. de; DUARTE, G. C. M.; EVANGELISTA NETO, J. Distribuição estacional, abundância e diversidade de insetos em áreas de Cerrado e agrícola no Brasil Central. In: SIMPÓSIO NACIONAL CERRADO, 9.; SIMPÓSIO INTERNACIONAL SAVANAS TROPICAIS, 2., 2008, Brasília, DF. Desafios e estratégias para o equilíbrio entre sociedade, agronegócio e recursos naturais: anais... Planaltina, DF: Embrapa Cerrados, 2008. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Cerrados. |
| |
| 15. | | OLIVEIRA, D. E.; SOARES, M. P.; GAMA, M. A. S. da; DRESCH, R.; BALDIN, M.; MARTELO, L. L. Diet supplementation with different levels of unprotected conjugated linoleic acid (CLA) progressively decreases milk fat content and yeld in dairy ewes. In: INTERNATIONAL SYMPOSIUM ON RUMINANT PHYSIOLOGY, 11., 2009, Clermont-Ferrand. Ruminant physiology: digestion, metabolism, and effects of nutrition on reproduction and welfare: proceedings. Clermont-Ferrand: Wageningen Academic Publishers, 2009. p. 626-627.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| 16. | | FERNANDES, D.; DRESCH, R.; BALDIN, M.; SOUZA, J. DE; GAMA, M. A. S. da; OLIVEIRA, D. E. DE. Efeito de doses do Ácido Linoleico Conjugado (CLA) sobre a concentração do CLA trans-10, cis-12 no leite e sua relação com o teor e a produção de gordura do leite de cabras leiteiras. In: Reunião Anual da Sociedade Brasileira de Zootecnia, 48., 2011, Belém. Anais...| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| 17. | | SOUZA, J. de; DRESCH, R.; BALDIN, M.; FERNANDES, D.; GAMA, M. A. S. da; OLIVEIRA, D. E. de. Efeito de doses de ácido linoléico conjugado (CLA) não protegido sobre o teor e produção de gordura do leite de ovelhas leiteiras. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 47., 2010, Salvador. Empreendedorismo e progresso científico na zootecnia brasileira: anais. Viçosa, MG: Sociedade Brasileira de Zootecnia, 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| 18. | | FERNANDES, D.; SOUZA, J. de; BALDIN, M.; GAMA, M. A. S. da; BRUSCHI, J. H.; OLIVEIRA, D. E. de. Efeito de diferentes doses de ácido linoleico conjugado desprotegido (CLA-D) sobre o teor e produção de gordura do leite de cabras leiteiras da raça Toggenburg. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 47., 2010, Salvador. Empreendedorismo e progresso científico na zootecnia brasileira: anais. Viçosa, MG: Sociedade Brasileira de Zootecnia, 2010. 3 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| 19. | | OLIVEIRA, D. E. de; MEDEIROS, S. R. de; TEDESCHI, L. O.; AROEIRA, L. J. M.; SILVA, S. C. da. Estimating forage intake of lactating dual-purpose cows using chromium oxide and n-alkanes as external markers. Scientia Agricola, Piracicaba, v. 64, n. 2, p. 103-110, 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| Registros recuperados : 39 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
