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dc.contributor.author
Palladino, Rafael Alejandro
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dc.contributor.author
O'Donovan, Michael
dc.contributor.author
Kenny, David A.
dc.date.available
2017-05-11T20:48:22Z
dc.date.issued
2014
dc.identifier.citation
Palladino, Rafael Alejandro; O'Donovan, Michael; Kenny, David A.; Fatty acid intake and rumen fatty acid composition is affected by pre-grazing herbage mass and daily herbage allowance in Holstein dairy cows; Spanish National Institute For Agriculture And Food Research And Technology; Spanish Journal Of Agricultural Research; 12; 3; -1-2014; 708-716
dc.identifier.issn
1695-971X
dc.identifier.uri
http://hdl.handle.net/11336/16351
dc.description.abstract
The objective of this study was to investigate the effect of level of pre-grazing herbage mass (HM) and daily herbage allowance (DHA) on the fatty acid (FA) intake and composition of ruminal content of grazing dairy cows. Four rumen fistulated Holstein-Friesian dairy cows were allocated to either a high or low HM (1700 vs 2600 kg DM ha-1) and within herbage mass treatment further allocated to a high or low DHA (20 vs 16 kg of DM cow-1 day-1) in a 4 × 4 Latin square design. Total FA intake and linolenic acid (LNA) intake was higher for cows on high DHA (p<0.05). Ruminal oleic acid, linoleic and LNA were not affected by treatments. Ruminal stearic acid (C18:0) and vaccenic acid (VA) concentrations were higher at low HM (43.6 and 14.8 g/100 gof FA respectively; p<0.01) compared to high HM (42.0 and 12.5 g/100 gof FA respectively for C18:0 and VA). Cows grazing high DHA had higher ruminal concentration of VA (15.3 g/100 gof FA; p<0.01) than low DHA (12.1 g/100 gof FA). Regarding milk FA composition, only some of the milk FA varied across treatments, being the VA and LNA concentrations higher at low HM (p<0.05). These data suggest that low HM and high DHA, at least within the range studied here, promotes the accumulation of ruminal VA which could be available for subsequent conversion within the mammary gland to the human health promoting c9,t11 isomer of conjugated linoleic acid.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Spanish National Institute For Agriculture And Food Research And Technology
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Conjugated Linoleic Acid
dc.subject
Linolenic Acid
dc.subject
Herbage Mass
dc.subject
Daily Herbage Allowance
dc.subject.classification
Producción Animal y Lechería
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dc.subject.classification
Producción Animal y Lechería
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Fatty acid intake and rumen fatty acid composition is affected by pre-grazing herbage mass and daily herbage allowance in Holstein dairy cows
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-08T21:18:07Z
dc.identifier.eissn
2171-9292
dc.journal.volume
12
dc.journal.number
3
dc.journal.pagination
708-716
dc.journal.pais
España
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dc.description.fil
Fil: Palladino, Rafael Alejandro. Universidad de Buenos Aires. Facultad de Agronomia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: O'Donovan, Michael. Teagasc Moorepark Research Centre; Irlanda
dc.description.fil
Fil: Kenny, David A.. Animal & Grassland Research and Innovation Centre; Irlanda
dc.journal.title
Spanish Journal Of Agricultural Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.5424/sjar/2014123-5578
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://revistas.inia.es/index.php/sjar/article/view/5578
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