Efficiency of microbial phytase supplementation in dietsformulated with different calcium:phosphorus ratios, supplied tobroilers from 22 to 33 days old

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorNaves, L. de P.-
Autor(es): dc.creatorRodrigues, P. B.-
Autor(es): dc.creatorTeixeira, L. do V.-
Autor(es): dc.creatorOliveira, E. C. de-
Autor(es): dc.creatorSaldanha, M. M.-
Autor(es): dc.creatorAlvarenga, R. R.-
Autor(es): dc.creatorCorrêa, A. D.-
Autor(es): dc.creatorLima, R. R.-
Data de aceite: dc.date.accessioned2026-02-09T11:55:35Z-
Data de disponibilização: dc.date.available2026-02-09T11:55:35Z-
Data de envio: dc.date.issued2017-03-23-
Data de envio: dc.date.issued2017-03-23-
Data de envio: dc.date.issued2014-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/12539-
Fonte completa do material: dc.identifierhttp://onlinelibrary.wiley.com/doi/10.1111/jpn.12186/full-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1150497-
Descrição: dc.descriptionAn experiment was conducted with broilers from 22 to 33 days of age to evaluate the efficiency of six microbialphytases supplemented in diets (1500 FTU/kg) that were formulated with three different calcium:available phos-phorus (Ca:Pavail) ratios (4.5:1.0, 6.0:1.0 and 7.5:1.0). A positive control diet without phytase was formulatedwith a Ca:Pavailratio of 7.5:3.4 to meet the nutritional requirements of the broilers. The P and ash contents of thetibia, magnesium in the plasma, performance, balance and retention of phytate phosphorus (Pphyt), intake oftotal P and nitrogen (N), nitrogen-corrected apparent metabolizable energy and apparent digestibility of dry mat-ter of the diets were not influenced (p > 0.05) by the type of phytase or the dietary Ca:Pavailratio. However, therewas an interaction (p < 0.05) between the phytase type and the Ca:Pavailratio for the retention coefficients oftotal P, Ca and N. Phytase B resulted in the highest Ca deposition in the tibia (p < 0.01). Phytases D, E and Freduced the Ca concentrations in the tibia (p < 0.01) and plasma (p < 0.05). Phytase D increased the P level inthe plasma and decreased the total P excretion (p < 0.01). Phytases E and F increased Ca excretion, while phy-tase A reduced it (p < 0.01). Regardless of the phytase type, increasing the dietary Ca:Pavailratio reduced(p < 0.05) the plasma P concentration and the excretion of total P and N and, conversely, increased (p < 0.05)the plasma concentration, intake and excretion of Ca. For the rearing period evaluated, it is possible to reducethe Pavailof the diet to 1.0 g/kg when Ca is maintained at 7.5 g/kg, and the diet is supplemented with 1500 FTUof phytase A, C, D or E/kg. This diet allows the maintenance of performance and adequate bone mineralization,and it improves the Ca, total P and Pphytutilization in addition to reducing the excretion of N and P into theenvironment.-
Idioma: dc.languageen-
Publicador: dc.publisherWiley-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Animal Physiology and Animal Nutrition-
Palavras-chave: dc.subjectMetabolism-
Palavras-chave: dc.subjectMicrobial phytase supplementation-
Palavras-chave: dc.subjectBroilers - Nutrition-
Título: dc.titleEfficiency of microbial phytase supplementation in dietsformulated with different calcium:phosphorus ratios, supplied tobroilers from 22 to 33 days old-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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