Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.contributorUniversidade Federal de Viçosa (UFV)
dc.contributorFed Univ Great Dourados
dc.creatorBettero, V. P. [UNESP]
dc.creatorGandra, J. R.
dc.creatorNunes, H. V. N.
dc.creatorFreitas, J. E. [UNESP]
dc.creatorBarletta, R. V.
dc.creatorCarvalho, M. V.
dc.creatorDetmann, E.
dc.creatorPereira, J. C.
dc.date2014-12-03T13:08:45Z
dc.date2014-12-03T13:08:45Z
dc.date2013-01-01
dc.date.accessioned2023-09-09T09:45:20Z
dc.date.available2023-09-09T09:45:20Z
dc.identifierhttp://www.ifzz.pl/index2.php?option=com_sobi2&sobi2Task=dd_download&fid=516&format=html&Itemid=0
dc.identifierJournal of Animal and Feed Sciences. Jablonna: Kielanowski Inst Animal Physiology Nutrition, v. 22, n. 4, p. 295-301, 2013.
dc.identifier1230-1388
dc.identifierhttp://hdl.handle.net/11449/111555
dc.identifierWOS:000329892600003
dc.identifierWOS000329892600003.pdf
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8761219
dc.descriptionThe 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 (gamma) 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.
dc.descriptionState Univ Sao Paulo, Dept Anim Sci, Sch Agr & Vet Sci, Sao Paulo, Brazil
dc.descriptionUniv Sao Paulo, Dept Anim Nutr & Prod, Sch Vet Med & Anim Sci, Sao Paulo, Brazil
dc.descriptionUniv Fed Vicosa, Dept Anim Sci, Vicosa, MG, Brazil
dc.descriptionFed Univ Great Dourados, Dept Anim Sci, Sch Agr Sci, BR-79804970 Dourados, MS, Brazil
dc.descriptionState Univ Sao Paulo, Dept Anim Sci, Sch Agr & Vet Sci, Sao Paulo, Brazil
dc.format295-301
dc.languageeng
dc.publisherKielanowski Inst Animal Physiology Nutrition
dc.relationJournal Of Animal And Feed Sciences
dc.relation0.900
dc.relation0,405
dc.rightsAcesso aberto
dc.sourceWeb of Science
dc.subjectdairy cows
dc.subjectneutral detergent fibre
dc.subjectomega-6 PUFA
dc.subjectlipid sources
dc.subjectruminal kinetics
dc.titleSources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets
dc.typeArtigo


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