Feed type for induced molting of commercial layer hens

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dc.contributor.authorSantos, Graciene Conceicao dos [UNESP]
dc.contributor.authorGarcia, Edivaldo Antonio [UNESP]
dc.contributor.authorVieira Filho, Javer Alves [UNESP]
dc.contributor.authorMolino, Andrea de Britto [UNESP]
dc.contributor.authorPelicia, Kleber
dc.contributor.authorBerto, Daniella Aparecida [UNESP]
dc.contributor.authorFloriano Murakami, Elise Saori [UNESP]
dc.contributor.authorMontenegro, Andressa Takahara [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Jose Rosario Vellano
dc.date.accessioned2014-12-03T13:07:04Z
dc.date.available2014-12-03T13:07:04Z
dc.date.issued2014-03-01
dc.description.abstractAn experiment employing three hundred and twenty 81-week-old Lohmann LSL commercial-breed hens was conducted to compare alternative induced-molting methods with the conventional method (fasting). Induced molting lasted 28 days at most, production and quality being monitored for four periods of 28 days thereafter. A completely randomized experimental design with five treatments, eight replicates of eight birds each per plot was adopted. The following experimental treatments were applied until a loss of 26% of body weight was reached: T1 - fasting, T2 - wheat bran ad libitum, T3 - rice bran ad libitum, T4 - cracked rice ad libitum, T5 - ground alfalfa ad libitum. Birds were then fed production diet ad libitum, except for those on treatment T1 (fasting) which received 30, 60 and 100 g/bird/day and then feed ad libitum. During induced molting the birds were exposed to a natural photoperiod and at day 28 that period was increased by 30 minutes/week until reaching 16 hours of light/day. The characteristics evaluated during induced molting were: feed intake, body weight changes and laying percentage. In the post-molt period, performance (feed intake, laying percentage, egg weight, egg mass, feed conversion ratio per dozen and per egg mass and percentage of broken eggs) and egg quality (specific gravity, eggshell breaking strength, percentages of eggshell, yolk, and albumen, eggshell thickness, yolk color and Haugh unit) were evaluated. Every 28 days one egg was collected from each repetition for three consecutive days for quality assessment. The use of rice bran and wheat bran is viable as molting inducers since the birds given those treatments display performance and egg quality similar to those fasted during the induced molting and also because these ingredients promote easier handling, eliminates the need for grinding and feed-mixing equipment and, being less aggressive, provide greater bird welfare.en
dc.description.affiliationUniv Estadual Paulista, Programa Posgrad Zootecnia, Botucatu, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Zootecnia, Botucatu, SP, Brazil
dc.description.affiliationUniv Jose Rosario Vellano, Dept Zootecnia, Alfenas, MG, Brazil
dc.description.affiliationUniv Estadual Paulista, Curso Zootecnia, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Programa Posgrad Zootecnia, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Zootecnia, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Curso Zootecnia, Botucatu, SP, Brazil
dc.format.extent146-150
dc.identifierhttp://dx.doi.org/10.1590/S1516-35982014000300007
dc.identifier.citationRevista Brasileira de Zootecnia-brazilian Journal of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 43, n. 3, p. 146-150, 2014.
dc.identifier.fileS1516-35982014000300007.pdf
dc.identifier.issn1806-9290
dc.identifier.lattes6743591347106727
dc.identifier.lattes7728883010098049
dc.identifier.scieloS1516-35982014000300007
dc.identifier.urihttp://hdl.handle.net/11449/111212
dc.identifier.wosWOS:000332924000007
dc.language.isoeng
dc.publisherRevista Brasileira Zootecnia Brazilian Journal Animal Sci
dc.relation.ispartofRevista Brasileira de Zootecnia = Brazilian Journal of Animal Science
dc.relation.ispartofjcr0.735
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectcracked riceen
dc.subjectegg productionen
dc.subjectground alfalfaen
dc.subjectrice branen
dc.subjectwheat branen
dc.titleFeed type for induced molting of commercial layer hensen
dc.typeArtigo
dcterms.rightsHolderRevista Brasileira Zootecnia Brazilian Journal Animal Sci
unesp.author.lattes6743591347106727
unesp.author.lattes7728883010098049
unesp.author.orcid0000-0002-3149-028X[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt

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