Evaluation of environmental conditions inside two commercial broiler production housings with distinct ventilation systems and stocking density

Author(s)

Miwa Yamamoto Miragliotta

• Document type: Doctoral Thesis
• Press: Campinas, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Agricola
• Defense date: 2005-08-19

Examining board members

Irenilza de Alencar Nääs; Jorge de Lucas Junior; Jose Fernando Machado Menten; Ademir José Petenate; Daniella Jorge de Moura

• Advisor: Marta dos Santos Baracho; Irenilza de Alencar Nääs

Abstract

The main objective of this study was the evaluation of environmental conditions inside two commercial broiler production housings with distinct ventilation and stocking density: conventional housing (G1) with 13 birds/m² and a combination of natural and mechanical ventilation for the growing period, and high density housing (G2) with 18 birds/m² and negative tunnel type ventilation for the same period. The houses located at Rio Claro/SP have been compared under parameters of air quality (gases and dust concentrations in the air), bioclimatic conditions, noise levels and production indexes, to the indication of high density for broiler production under tropical conditions. It was concluded that dust and gases concentrations (explosive, nitric oxide and carbon dioxide) in the air and noise level have been in agreement of maximum limits of international recommendations. Despite higher ammonia and carbon monoxide concentrations in the air of house G2, it was not observed significantly differences between final production indexes. High density housing has produced 9kg bird/m² or 13t birds/flock more than the other, which recommends its use under tropical conditions (AU)