Data/hora: 11/06/2024 11:01:46

Provedor de dados: 	70	
País: 	Brazil	
Título: 	Thermal comfort temperature update for broiler chickens up to 21 days of age	
Autores: 	Cassuce,Déborah C.; Tinôco,Ilda de F. F.; Baêta,Fernando C.; Zolnier,Sérgio; Cecon,Paulo R.; Vieira,Maria de F. A.	
Data: 	2013-02-01	
Ano: 	2013	
Palavras-chave: 	Thermal stress; Aviculture; Performance.	
Resumo: 	Due to changes in genetics and nutrition, as well as in acclimatization of broiler chickens to the Brazilian climate, temperature values currently accepted as optimal may be outdated. The objective of this research was to update the environment temperatures that characterize the thermal comfort for broilers chickens from one to 21 days of age, under Brazilian production conditions. This research was conducted with 600 COBB birds, which were distributed in five growth chambers maintained at different temperatures during the first three weeks of age. During the experimental period, temperature values were progressively reduced, consisting in five treatments: T2724/21, T30/27/24, T33/30/27, T36/33/30 and T39/36/33. It was observed that the birds maintained in the T30(27-24) treatment presented better performance compared to other environment conditions. Based on the obtained regression models, the environment temperature values that provide greater weighing gain for the broiler chicken growth in the initial period were 31.3, 25.5 and 21.8 ºC, respectively for the first, second and third week of age.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100004	
Editor: 	Associação Brasileira de Engenharia Agrícola	
Relação: 	10.1590/S0100-69162013000100004	
Formato: 	text/html	
Fonte: 	Engenharia Agrícola  v.33 n.1 2013	
Fonte: 	info:eu-repo/semantics/openAccess