A novel consensus bacterial 6-phytase variant improves the responses of laying hens fed an inorganic phosphorus-free diet with reduced energy and nutrients from 23 to 72 wk of age

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorIFF-
Autor(es): dc.creatorMoura, Thaila F.-
Autor(es): dc.creatorReis, Matheus P.-
Autor(es): dc.creatorHorna, Freddy A.-
Autor(es): dc.creatorNóbrega, Ingryd Palloma T.-
Autor(es): dc.creatorBello, Abiodun-
Autor(es): dc.creatorDonato, Daniella C.Z.-
Autor(es): dc.creatorWhite, Emma-
Autor(es): dc.creatorDesjant-Li, Yueming-
Autor(es): dc.creatorSakomura, Nilva K.-
Data de aceite: dc.date.accessioned2025-08-21T20:34:38Z-
Data de disponibilização: dc.date.available2025-08-21T20:34:38Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.psj.2023.102949-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299584-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299584-
Descrição: dc.descriptionThe objective of this study was to evaluate the effect of a novel consensus bacterial 6-phytase variant (PhyG) on egg productivity, eggshell quality, and body composition of laying hens fed inorganic phosphate-free diets with reduced energy and nutrients from 23 to 72 wk of age. Five treatments were randomly assigned, performing 28 replicates per treatment with 4 hens each, totaling 560 Hy-Line W80 birds. A positive control (PC) feed was formulated to contain adequate levels of energy and nutrients. A negative control (NC) feed was formulated without added inorganic phosphate (0.12% nonphytic phosphorus [nPP]) and reduced in Ca, Na, dig AA, and metabolizable energy in comparison with PC feed. Phytase was supplemented in the NC feed at 0, 300, 600, and 900 FTU/kg of feed. The responses evaluated were performance, egg quality, economic analysis, body composition, and tibia composition. Data were analyzed by a 2-factor (diet and age) repeated measure analysis. Overall, the feed intake, hen-day egg production, egg mass, and egg revenue were reduced by the complete removal of dicalcium phosphate (DCP) (P < 0.05). Supplement phytase in the NC diet elicits a positive response on each one of those variables. Laying hens consuming the NC feed with 900 FTU/kg of phytase produced more eggs per hen-housed compared with the phytase dosages of 300 and 600 FTU/kg. Body composition was not affected by dietary nPP, Ca, Na, dig AA, and energy reductions (P > 0.05). At 72-wk-old, tibia ash was reduced in hens consuming the NC diet vs. PC (P < 0.05) and no difference was observed between hens supplemented with phytase and the PC feed. Margin over feeding cost increased in a dose-dependent manner with phytase supplementation. Supplementation with 900 FTU/kg of phytase is recommended to improve the number of eggs produced per hen-housed and the number of marketable eggs produced through 23 to 72 wk of age, under this dietary setting.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionDepartment of Animal Science Universidade Estadual Paulista “Julio de Mesquita Filho” FCAV/UNESP-
Descrição: dc.descriptionDanisco Animal Nutrition & Health IFF-
Descrição: dc.descriptionDepartment of Animal Science Universidade Estadual Paulista “Julio de Mesquita Filho” FCAV/UNESP-
Descrição: dc.descriptionCAPES: 88887489168/2020-00-
Idioma: dc.languageen-
Relação: dc.relationPoultry Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectavailable phosphorus-
Palavras-chave: dc.subjectegg production-
Palavras-chave: dc.subjectegg quality-
Palavras-chave: dc.subjectphytate-
Palavras-chave: dc.subjectphytic acid-
Título: dc.titleA novel consensus bacterial 6-phytase variant improves the responses of laying hens fed an inorganic phosphorus-free diet with reduced energy and nutrients from 23 to 72 wk of age-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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