Strains of free-range broilers reared in semi-intensive system in a hot climate region

Authors

  • Adélio Nunes Dias Universidade Federal Rural do Rio de Janeiro, Instituto de Zootecnia, Rodovia BR 465, Km 07, Seropédica, Caixa Postal 74.580, CEP 23890-000 Rio de Janeiro, RJ.
  • Mônica Patrícia Maciel Universidade Estadual de Montes Claros, Departamento de Ciências Agrárias, Avenida Reinaldo Viana, no 2630, Bico da Pedra, Caixa Postal 91, CEP 39440-000, Janaúba, MG.
  • Auriclécia Lopes de Oliveira Aiura Universidade Estadual de Montes Claros, Departamento de Ciências Agrárias, Avenida Reinaldo Viana, no 2630, Bico da Pedra, Caixa Postal 91, CEP 39440-000, Janaúba, MG
  • Cláudio Luiz Correa Arouca Universidade Estadual de Montes Claros, Departamento de Ciências Agrárias, Avenida Reinaldo Viana, no 2630, Bico da Pedra, Caixa Postal 91, CEP 39440-000, Janaúba, MG.
  • Daiane Batista Silva Universidade Estadual de Montes Claros, Departamento de Ciências Agrárias, Avenida Reinaldo Viana, no 2630, Bico da Pedra, Caixa Postal 91, CEP 39440-000, Janaúba, MG.
  • Vítor Hugo Santana de Moura Universidade Estadual de Montes Claros, Departamento de Ciências Agrárias, Avenida Reinaldo Viana, no 2630, Bico da Pedra, Caixa Postal 91, CEP 39440-000, Janaúba, MG.

DOI:

https://doi.org/10.1590/S1678-3921.pab2016.v51.22793

Keywords:

ambience, alternative poultry farming, behavior, performance

Abstract

The objective of this work was to evaluate the performance, physiological traits, and behavior of five lines of free-range broilers reared in a semi-intensive system in hot climate region. Four hundred birds, with an initial age of 35 days, were used in five treatments represented by the free-range lines: Pescoço Pelado, Vermelho Pesadão, Carijó, Master Griss, and Colorido lines. A completely randomized design with four replicates and 20 plots was used. Performance (weight gain, feed intake, and feed conversion), rectal temperature, respiratory frequency, and behavior were evaluated. There were no significant differences between the lines for performance and physiological variables. All lines showed thermal discomfort and, based on their behaviors, an adaptation trend to hot climate was noted. The Pescoço Pelado, Vermelho Pesadão, Carijó, Master Griss, and Colorido lines can be reared in semi-intensive systems in hot climate region.

Downloads

Published

2017-02-03

How to Cite

Dias, A. N., Maciel, M. P., Aiura, A. L. de O., Arouca, C. L. C., Silva, D. B., & Moura, V. H. S. de. (2017). Strains of free-range broilers reared in semi-intensive system in a hot climate region. Pesquisa Agropecuaria Brasileira, 51(12), 2010–2017. https://doi.org/10.1590/S1678-3921.pab2016.v51.22793

Issue

v.51, n.12, dez. 2016

Section

ANIMAL SCIENCE