Evaluation of total and non-fatty ether extract in feeds and cattle feces using two analytical methods

dc.creatorSilva, P. T.
dc.creatorDetmann, E.
dc.creatorValadares Filho, S. C.
dc.creatorDetmann, K. S. C.
dc.creatorBarros, L. V.
dc.creatorMartins, S. C. V.
dc.creatorMorais, L. E.
dc.creatorCosta, V. A. C.
dc.date2018-09-11T18:16:06Z
dc.date2018-09-11T18:16:06Z
dc.date2011-02-11
dc.date.accessioned2023-09-27T22:19:51Z
dc.date.available2023-09-27T22:19:51Z
dc.identifier0377-8401
dc.identifierhttps://doi.org/10.1016/j.anifeedsci.2010.10.012
dc.identifierhttp://www.locus.ufv.br/handle/123456789/21758
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8973733
dc.descriptionThe objective of this study was to evaluate ether extract (EE) concentrations, pigments, and wax in forages (n = 14), concentrates (n = 23), and cattle feces (n = 100) using extraction methods recommended by Association of Official Analytical Chemists (AOAC; method 920.39) and American Oil Chemist's Society (AOCS; method Am 5-04). The EE contents were compared by adjusting a linear regression model for each sample type. For the feces and forage samples, the EE contents produced by the AOCS method were greater (P<0.05) compared to those obtained using the AOAC method. No differences between methods were observed in EE content of concentrates (P>0.05). Concentration of vegetable pigments and wax were evaluated by using analysis for variance. Vegetable pigments were lower (P<0.05) in the post-extraction residues using the AOCS method, than the AOAC method, indicating greater participation of vegetable pigments in the EE. No differences were observed between the methods in wax concentration of the post-extraction residues (P>0.05). The quantification method of the EE content that is recommended by AOCS is not suggested for analyses of forage and feces of ruminants because it possibly increases the removal of non-fatty material, mostly pigments, in comparison to the method recommended by AOAC.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherAnimal Feed Science and Technology
dc.relationVolume 163, Issues 2–4, Pages 111-117, February 2011
dc.rightsElsevier B.V.
dc.subjectFeed analysis
dc.subjectFilter bags
dc.subjectVegetable pigments
dc.subjectWax
dc.titleEvaluation of total and non-fatty ether extract in feeds and cattle feces using two analytical methods
dc.typeArtigo


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