Effect of phytase supplementation with different levels of crude protein and available phosphorum on performance and crude protein excretion of broiler chickens

  • Andréia Cristina Nakashima Vaz Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Ricardo de Albuquerque Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Marcelo Landim Brisola Pontifícia Universidade Católica de Minas Gerais, Faculdade de Medicina Veterinária, Poços de Caldas, MG
  • Daniella Carolina Zanardo Donato Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Paula Duarte Silva Rangel Garcia
Keywords: Enzyme, Faeces, Aviculture, Performance, Crude protein

Abstract

It was used 504 (five hundred four) 1 day old male chicks, of a commercial broiler line (Ag Ross 308), distributed in 12 treatments, with 6 replicates per treatment. The experimental design was casually blocked and treatments were organized in a 2x2x3 factorialarrangement: two phosphorus levels (0.45 and 0.34%), two phytase inclusion levels (0 and 1200 FTU/kg) and three protein levels (22.5; 20.5 and 18.5%). Body weight gain was observed in birds fed diets with phytase supplementation although it hasn't affected the feedconversion ratio. Feed intake wasn't affected by the low protein levels with added phytase. Crude protein excreted was lower with phytasesupplementation (33.36 vs 31.83%). Phytase enzyme affected dairy feed intake and body weight gain. Crude protein crescent levels ondiet caused increased crude protein excretion, and phytase supplementation was efficient reducing crude protein excreted

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Published
2009-04-01
How to Cite
Vaz, A., Albuquerque, R., Brisola, M., Donato, D., & Garcia, P. (2009). Effect of phytase supplementation with different levels of crude protein and available phosphorum on performance and crude protein excretion of broiler chickens. Brazilian Journal of Veterinary Research and Animal Science, 46(2), 107-111. https://doi.org/10.11606/issn.1678-4456.bjvras.2009.26756
Section
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