Data/hora: 11/06/2024 03:27:48

Provedor de dados: | Revista Brasileira de Zootecnia
País: | Brazil
Título: | Curtain color and lighting program in broiler production: III - thermal comfort
Autores: | Abreu,Paulo Giovanni de; Abreu,Valéria Maria Nascimento; Coldebella,Arlei; Jaenisch,Fátima Regina Ferreira; Paiva,Doralice Pedroso de.
Data: | 2011-09-01
Ano: | 2011
Palavras-chave: | Animal environment; Poultry house; Thermal index.
Resumo: | The objective of this study was to evaluate the thermal comfort of broilers reared under two lighting programs (almost continuous and intermittent) in broiler houses with yellow or blue lateral curtains. The experiment was carried out from June 24, 2004 until May 12, 2005. Six consecutive flocks were housed in four 12 × 10 m broilers houses internally divided into four pens of 200 birds each. Six flocks were raised on the same litter. The registration of data was accomplished at 3-hour intervals, for 24 hours twice a week. In the center of each pen and outside the house, dry and wet bulb temperatures, black globe temperature, and air velocity were collected. Based on the data collected at each time, air temperature (AT) (ºC), black globe humidity temperature index (BGHTI), radiant thermal load (RTL) (W/m²), and relative air humidity (RH) were determined. Harmonic analysis was used to estimate m, R, and f parameters. In general, the best results in terms of thermal comfort for the birds were found when near-continuous lighting program and yellow curtain were used.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000900025
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982011000900025
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.40 n.9 2011
Fonte: | info:eu-repo/semantics/openAccess