A procedure to evaluate the efficiency of utilization of dietary amino acid for poultry

Autores

  • Edney Pereira da Silva Universidade Estadual Paulista “Júlio de Mesquita Filho”
  • Nilva Kazue Sakomura Universidade Estadual Paulista “Júlio de Mesquita Filho”
  • Juliano Cesar de Paula Dorigam Universidade Estadual Paulista “Júlio de Mesquita Filho”
  • Euclides Braga Malheiros Universidade Estadual Paulista “Júlio de Mesquita Filho”
  • Joao Batista Kochenborger Fernandes Universidade Estadual Paulista “Júlio de Mesquita Filho”
  • José Anchieta de Araujo Universidade Estadual Paulista “Júlio de Mesquita Filho”

DOI:

https://doi.org/10.4025/actascianimsci.v36i2.22013

Palavras-chave:

growth curve, lysine, methionine cystine, protein weight, pullets, threonine

Resumo

The aim of this study was to develop a procedure based on Gompertz function to determine the efficiency of utilization of amino acid. The procedure was applied to determine the efficiency of utilization of dietary lysine, methionine+cystine and threonine by growing pullets and based on the efficiencies were estimated the requirements for the growth phase of birds. The Gompertz function was fitted to the data of feed intake, body weight, feather-free body protein weight and feather protein weight of four strains of laying hens in the growth phase. The rates of consumption and daily protein deposition (PD) were calculated. The amino acid deposition was obtained by multiplying the PD by the amino acid concentration in feather protein and feather-free body protein. The results showed that the efficiency of utilization of amino acid decreased with maturity and, conversely, there was a proportional increase of the requirement per kg of weight gain. The procedure based on the Gompertz function to determine the efficiency of utilization of amino acid proved to be suitable to evaluate the efficiency of utilization of amino acid and can be a useful tool to diagnose the effectiveness of the nutritional management, aiding in decision-making on the nutritional management.

 

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Biografia do Autor

  • Edney Pereira da Silva, Universidade Estadual Paulista “Júlio de Mesquita Filho”
    Departamento de Zootecnia, FCAV/Unesp
  • Nilva Kazue Sakomura, Universidade Estadual Paulista “Júlio de Mesquita Filho”
    Departamento de Zootecnia, FCAV/Unesp
  • Juliano Cesar de Paula Dorigam, Universidade Estadual Paulista “Júlio de Mesquita Filho”
    Departamento de Zootecnia, FCAV/Unesp
  • Euclides Braga Malheiros, Universidade Estadual Paulista “Júlio de Mesquita Filho”
    Departamento de Zootecnia, FCAV/Unesp
  • Joao Batista Kochenborger Fernandes, Universidade Estadual Paulista “Júlio de Mesquita Filho”
    CAunesp
  • José Anchieta de Araujo, Universidade Estadual Paulista “Júlio de Mesquita Filho”
    Departamento de Zootecnia, FCAV/Unesp

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Publicado

2014-05-08

Edição

Seção

Nutrição de Não-Ruminantes

Como Citar

Silva, E. P. da, Sakomura, N. K., Dorigam, J. C. de P., Malheiros, E. B., Fernandes, J. B. K., & Araujo, J. A. de. (2014). A procedure to evaluate the efficiency of utilization of dietary amino acid for poultry. Acta Scientiarum. Animal Sciences, 36(2), 163-169. https://doi.org/10.4025/actascianimsci.v36i2.22013