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Dried yeast (Saccharomyces cerevisae) as a protein source for horses

dc.contributor.authorWinkler, B. [UNESP]
dc.contributor.authorTosi, H. [UNESP]
dc.contributor.authorWebster, A. J. F.
dc.contributor.authorResende, F. D.
dc.contributor.authorOliveira, A. A. M. A. [UNESP]
dc.contributor.authorVillela, L. C. V. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Bristol
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)
dc.date.accessioned2014-05-20T13:19:10Z
dc.date.available2014-05-20T13:19:10Z
dc.date.issued2011-05-01
dc.description.abstractThe objective of this study was to evaluate the use of dried yeast in the diet of foals when replacing soybean meal to provide 0, 025, 0.50, 0.75 and 1.00 of the main protein source. Two trials were performed. Trial one was done to evaluate the influence of yeast on the digestibility of the five diets. Ten foals were kept in metabolic cages and five diets were tested twice. The experiment was repeated a second time, with foals receiving a different diet so that every diet was tested 4 times on a different animal. The concentrate was offered in a level of 2% of the body weight and Chloris guaiana hay was offered as roughage in a level of 1% of the body weight. In a second trial thirty 'Brasileiro de Hipismo' foals, aged between 12 and 14 months, were used. They were kept on pastures of Cynodon dactylon c.v. Coastcross and Cynodon spp. c.v. Tifton 85, and the concentrate was offered twice a day in separate pens at a level of 2% of the body weight. The pastures were of good quality and the pasture availability was high. The experimental design was a 5 x 3 factorial (five levels of yeast and three groups of animals in different pastures), with two replicates/treatment. The foals were weighed and measured every 28 days. Blood samples were collected at the end of the trial. The concentrate intake was measured daily. The pasture intake was measured through estimation of faecal output with chromic oxide and by the amount of acid detergent insoluble ash in the pasture, feed and faecal samples. The mean digestibility of dry matter, organic matter, crude energy and acid detergent fibre did not differ between the diets. A quadratic effect was observed for the digestibility of crude protein and neutral detergent fibre. Increasing the level of yeast in the diets did not have an influence on the average daily weight gain, heart girth gain, withers height gain, but linearly depressed the daily intake of the concentrate. However, the intake of pasture was not influenced by the different diets. The biochemical blood parameters total protein, albumin, globulin, urea, uric acid, creatinine, cholesterol, triglycerides, aspartate aminotransferase and gamma glutamyltransferase were not affected by increasing levels of dried yeast. It was concluded that dried yeast can be used as the only main protein source in the concentrate diets of 12 month old foals. (C) 2010 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP, Fac Ciencias Agr & Vet Jaboticabal, Dept Zootecnia Ruminantes, BR-14870000 Jaboticabal, SP, Brazil
dc.description.affiliationUniv Bristol, Dept Vet Clin Sci, Bristol BS40 5DU, Avon, England
dc.description.affiliationAgencia Paulista Tecnol Agronegocios, Dept Descentralizacao Desenvolvimento, BR-14770000 Colina, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Ciencias Agr & Vet Jaboticabal, Dept Zootecnia Ruminantes, BR-14870000 Jaboticabal, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFoundation for the Support of Research in the State of São Paulo
dc.description.sponsorshipIdFAPESP: 96/10012-9
dc.format.extent168-177
dc.identifierhttp://dx.doi.org/10.1016/j.livsci.2010.11.004
dc.identifier.citationLivestock Science. Amsterdam: Elsevier B.V., v. 137, n. 1-3, p. 168-177, 2011.
dc.identifier.doi10.1016/j.livsci.2010.11.004
dc.identifier.fileWOS000289865200022.pdf
dc.identifier.issn1871-1413
dc.identifier.urihttp://hdl.handle.net/11449/4952
dc.identifier.wosWOS:000289865200022
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofLivestock Science
dc.relation.ispartofjcr1.204
dc.relation.ispartofsjr0,730
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectDried yeasten
dc.subjectEquineen
dc.subjectDigestibilityen
dc.subjectIntakeen
dc.subjectPastureen
dc.titleDried yeast (Saccharomyces cerevisae) as a protein source for horsesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentZootecnia - FCAVpt

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