Comportamento espacial das condições termo-luminosas do aviário de poedeiras em sistema vertical naturalmente ventilado

Translated title of the contribution: Spatial behavior of the thermo-luminous conditions of facility laying hens in naturally ventilated vertical system

Letícia Cibele da Silva Ramos Freitas, Ilda de Fátima Ferreira Tinôco, Richard Stephen Gates, Cecília de Fátima Souza, Matteo Barbari, Carlos Gutemberg de Souza Teles Junior

Research output: Contribution to journalArticlepeer-review

Abstract

The facilities for laying hens should be designed to provide thermal comfort and satisfactory luminosity for the production of quality eggs. The objective of this study was to evaluate the spatial behavior of thermal conditions and light intensity of facilities for laying hens with vertical cages naturally conditioned during winter and summer. Air temperature, air relative humidity and light intensity data were collected in 75 points distributed evenly through the longitudinal direction of the installation in three tiers of cages (first, third and sixth). Each point represented a set of coordinates (x, y, z), being the x-axis the lines (L1, L2, L3, L4, L5), y-axis the sections (S1, S2, S3, S4, S5) and z-axis the tiers (N1, N2, N3). The spatial behavior of the thermal conditions of the facility was held during the coldest period of winter and the warmest period of summer. The experimental design was completely randomized in a factorial scheme. In the winter, the temperature showed homogeneous behavior among sections and variable among lines. In the summer, the spatial variability of temperature and humidity was more accentuated than in the winter, mainly among tiers. For both seasons, the center of the facility presented lower light intensity than the lateral. From the spatial behavior of the thermal conditions of the facility laying hens, it is possible to verify the magnitude and variability of temperature, relative humidity and light intensity, identify vulnerable and deficit thermal regions and contribute to decision-making related to thermal conditioning and luminosity of the facility.

Translated title of the contributionSpatial behavior of the thermo-luminous conditions of facility laying hens in naturally ventilated vertical system
Original languagePortuguese
Pages (from-to)550-560
Number of pages11
JournalCiencia e Agrotecnologia
Volume42
Issue number5
DOIs
StatePublished - Sep 1 2018

Keywords

  • Characterization of the environment
  • Light intensity
  • Thermal variability

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Agronomy and Crop Science
  • veterinary(all)
  • Soil Science

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