Effect of an unusual source of methionine on the performance of organic chickens

dc.contributor.authorDemattê Filho, Luiz Carlos
dc.contributor.authorPereira, Dayana Cristina de Oliveira
dc.contributor.authorPereira, Gustavo do Valle do
dc.contributor.authorBeutner, Christian Güdde [UNESP]
dc.contributor.institutionCPMO
dc.contributor.institutionESALQ/CENA
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:43:26Z
dc.date.available2018-12-11T16:43:26Z
dc.date.issued2016-09-01
dc.description.abstractThe use of amino acids from alternative sources to reduce costs and increase or maintain poultry production levels is crucial to succeed in competitive industry. This study investigated the alternative methionine effects obtained from soybean compared to synthetic DL-methionine—99 % on the broilers performance in the production periods of 1–21 and 1–42 days of age. A total of 720 pullets were included in a completely randomized design with four treatments and six replicates of 30 birds. They received water and food ad libitum throughout the production phase. Diets consisted of T1—reference diet formulated with synthetic methionine (DL-methionine—99 %); T2—diet replacing 100 % of synthetic methionine with alternative methionine; T3—diet replacing 110 % of synthetic methionine with alternative methionine, and T4—diet replacing 120 % of synthetic methionine with alternative methionine. At 1–21 days of age, there was a significant difference (p < 0.05) among treatments in daily gain weight (DWG), live weight (LW), and feed intake (FI). However, no differences were observed (p > 0.05) in feed conversion (FC) and mortality rates. At 42 days of age, a significant difference (p < 0.05) in DWG, LW, and FC parameters was observed among treatments, but there were no differences in FI and mortality. Broilers supplemented with alternative methionine showed significantly lower DWG, LW, FI, productive efficiency index (PEI), and flock uniformity (FU) and showed higher FC compared to animals supplemented with synthetic methionine. The synthetic methionine replacement resulted in lower broiler performance. More researches are necessary to promote better alternative diets for this system.en
dc.description.affiliationCPMO
dc.description.affiliationESALQ/CENA
dc.description.affiliationESALQ-USP
dc.description.affiliationFCAVJ-UNESP
dc.description.affiliationUnespFCAVJ-UNESP
dc.format.extent191-197
dc.identifierhttp://dx.doi.org/10.1007/s13165-015-0127-1
dc.identifier.citationOrganic Agriculture, v. 6, n. 3, p. 191-197, 2016.
dc.identifier.doi10.1007/s13165-015-0127-1
dc.identifier.file2-s2.0-84981278248.pdf
dc.identifier.issn1879-4246
dc.identifier.issn1879-4238
dc.identifier.scopus2-s2.0-84981278248
dc.identifier.urihttp://hdl.handle.net/11449/168871
dc.language.isoeng
dc.relation.ispartofOrganic Agriculture
dc.relation.ispartofsjr0,308
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAlternative feed source
dc.subjectBroiler chickens
dc.subjectMethionine
dc.subjectOrganic system
dc.titleEffect of an unusual source of methionine on the performance of organic chickensen
dc.typeArtigo

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