Data/hora: 13/06/2024 04:52:01

Provedor de dados: | 70
País: | Brazil
Título: | BEHAVIOR OF BROILERS UNDER THE INFLUENCE OF LED LIGHTING AND MICROMETEOROLOGICAL ELEMENTS
Autores: | Rodrigues,Tatiana P. N. da S.; Pandorfi,Héliton; Guiselini,Cristiane; Almeida,Gledson L. P. de; Morrill,Waldirene B. B.
Data: | 2020-06-01
Ano: | 2020
Palavras-chave: | Animal welfare; Broiler farming; Lighting system; Principal component analysis; Thermal comfort.
Resumo: | ABSTRACT The objective of this research was to analyze the differences between the food behaviors observed under the factors of production environment, sex and lighting system, using stochastic tools of multivariate analysis. As for the thermal characteristics of the environment, air temperature (T, °C), enthalpy (H, kJ kg-1), and black globe temperature and humidity index (BGTHI) showed high positive correlation with each other and strong negative correlation with relative humidity (RH, %). The “male drinking” behavior was positively associated with thermal characteristics of the environment in the three periods of the day, that is, the act of drinking more water would be a way to alleviate thermal stress. Birds subjected to red LED showed a strong negative correlation with temperature associated with the “female drinking” behavior, in the afternoon period, according to the principal component analysis, which is justified by the orientation of the broiler house with its longitudinal axis in the NE/SW direction, so the sunlight directly hits the area where the drinker was located. Variation in body weight showed better response when the birds were exposed to a temperature of 27 °C, for the 5th week of the rearing cycle.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300272
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/1809-4430-eng.agric.v40n3p272-279/2020
Formato: | text/html
Fonte: | Engenharia Agrícola  v.40 n.3 2020
Fonte: | info:eu-repo/semantics/openAccess