Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.22358/jafs/65916/2013 http://hdl.handle.net/11449/231322 |
Resumo: | The objective of this study was to evaluate the behaviour of fibre in the digestive tract on the basis of the passage kinetics of forage and concentrate particles in cows fed different omega-6 fatty-acid sources. The scientific hypothesis of this study was that omega-6 fatty acids do not interfere with the digestion of fibre in the diets of dairy cows. Five primiparous lactating Holstein cows were used in the experiment. The experimental diets were: control (C), ground soyabean (GS), cottonseed (CS), soyabean oil (SO), calcium salts of fatty acids (CSFA). The global mean estimates for the parameters of passage rate (y) were 0.038 and 0.055 h-1 for forage and concentrate, respectively. The only significant effect with respect to the passage rate was a high negative correlation between the concentrate passage rate and dry matter intake. There was less undegradable neutral detergent fibre NDF in treatments without added lipid. Dietary supplementation with lipid sources does not alter the kinetic parameters of roughage and concentrate particle passage or in vitro NDF degradation. Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre. |
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Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow dietsDairy cowsNeutral detergent fibreOmega-6 PUFA, lipid sources, ruminal kineticsThe objective of this study was to evaluate the behaviour of fibre in the digestive tract on the basis of the passage kinetics of forage and concentrate particles in cows fed different omega-6 fatty-acid sources. The scientific hypothesis of this study was that omega-6 fatty acids do not interfere with the digestion of fibre in the diets of dairy cows. Five primiparous lactating Holstein cows were used in the experiment. The experimental diets were: control (C), ground soyabean (GS), cottonseed (CS), soyabean oil (SO), calcium salts of fatty acids (CSFA). The global mean estimates for the parameters of passage rate (y) were 0.038 and 0.055 h-1 for forage and concentrate, respectively. The only significant effect with respect to the passage rate was a high negative correlation between the concentrate passage rate and dry matter intake. There was less undegradable neutral detergent fibre NDF in treatments without added lipid. Dietary supplementation with lipid sources does not alter the kinetic parameters of roughage and concentrate particle passage or in vitro NDF degradation. Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre.State University of Säo Paulo Department of Animal Science School of Agrarian and Veterinary Science Jaboticabal, Sao PauloUniversity of Sao Paulo Department of Animal Nutrition and Production School of Veterinary Medicine and Animal Science, Pirassununga, Sao PauloFederal University of Viçosa Department of Animal Science, Viçosa, Minas GeraisFederal University of Great Dourados Department of Animal Science Cidade Universitária, Itahum, Km 12, Caixa Postal 533, CEP: 79.804-970, Dourados, Mato Grosso do SulSchool of Agrarian and Veterinary Science JaboticabalUniversidade de São Paulo (USP)Federal University of ViçosaCidade UniversitáriaBettero, V. P.Gandra, J. R.Nunes, H. V.N.Freitas, J. E.Barletta, R. V.Carvalho, M. V.Detmann, E.Pereira, J. C.2022-04-29T08:44:47Z2022-04-29T08:44:47Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article295-301http://dx.doi.org/10.22358/jafs/65916/2013Journal of Animal and Feed Sciences, v. 22, n. 4, p. 295-301, 2013.1230-1388http://hdl.handle.net/11449/23132210.22358/jafs/65916/20132-s2.0-84893864524Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Animal and Feed Sciencesinfo:eu-repo/semantics/openAccess2022-04-29T08:44:48Zoai:repositorio.unesp.br:11449/231322Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:44:48Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets |
title |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets |
spellingShingle |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets Bettero, V. P. Dairy cows Neutral detergent fibre Omega-6 PUFA, lipid sources, ruminal kinetics |
title_short |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets |
title_full |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets |
title_fullStr |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets |
title_full_unstemmed |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets |
title_sort |
Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets |
author |
Bettero, V. P. |
author_facet |
Bettero, V. P. Gandra, J. R. Nunes, H. V.N. Freitas, J. E. Barletta, R. V. Carvalho, M. V. Detmann, E. Pereira, J. C. |
author_role |
author |
author2 |
Gandra, J. R. Nunes, H. V.N. Freitas, J. E. Barletta, R. V. Carvalho, M. V. Detmann, E. Pereira, J. C. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
School of Agrarian and Veterinary Science Jaboticabal Universidade de São Paulo (USP) Federal University of Viçosa Cidade Universitária |
dc.contributor.author.fl_str_mv |
Bettero, V. P. Gandra, J. R. Nunes, H. V.N. Freitas, J. E. Barletta, R. V. Carvalho, M. V. Detmann, E. Pereira, J. C. |
dc.subject.por.fl_str_mv |
Dairy cows Neutral detergent fibre Omega-6 PUFA, lipid sources, ruminal kinetics |
topic |
Dairy cows Neutral detergent fibre Omega-6 PUFA, lipid sources, ruminal kinetics |
description |
The objective of this study was to evaluate the behaviour of fibre in the digestive tract on the basis of the passage kinetics of forage and concentrate particles in cows fed different omega-6 fatty-acid sources. The scientific hypothesis of this study was that omega-6 fatty acids do not interfere with the digestion of fibre in the diets of dairy cows. Five primiparous lactating Holstein cows were used in the experiment. The experimental diets were: control (C), ground soyabean (GS), cottonseed (CS), soyabean oil (SO), calcium salts of fatty acids (CSFA). The global mean estimates for the parameters of passage rate (y) were 0.038 and 0.055 h-1 for forage and concentrate, respectively. The only significant effect with respect to the passage rate was a high negative correlation between the concentrate passage rate and dry matter intake. There was less undegradable neutral detergent fibre NDF in treatments without added lipid. Dietary supplementation with lipid sources does not alter the kinetic parameters of roughage and concentrate particle passage or in vitro NDF degradation. Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 2022-04-29T08:44:47Z 2022-04-29T08:44:47Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.22358/jafs/65916/2013 Journal of Animal and Feed Sciences, v. 22, n. 4, p. 295-301, 2013. 1230-1388 http://hdl.handle.net/11449/231322 10.22358/jafs/65916/2013 2-s2.0-84893864524 |
url |
http://dx.doi.org/10.22358/jafs/65916/2013 http://hdl.handle.net/11449/231322 |
identifier_str_mv |
Journal of Animal and Feed Sciences, v. 22, n. 4, p. 295-301, 2013. 1230-1388 10.22358/jafs/65916/2013 2-s2.0-84893864524 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Animal and Feed Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
295-301 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965477978505216 |