Data/hora: 13/06/2024 04:19:17

Provedor de dados: 	70	
País: 	Brazil	
Título: 	Behavior of chicks subjected to thermal challenge	
Autores: 	Ferraz,Patricia F. P.; Yanagi Junior,Tadayuki; Alvarenga,Talita A. C.; Reis,Gregory M.; Campos,Alessandro T.	
Data: 	2014-12-01	
Ano: 	2014	
Palavras-chave: 	Grouping of data; Dendogram; Broiler; Productive responses.	
Resumo: 	In the first week of a chick life, broilers are very sensitive to different conditions outside their thermoneutral zone. Thus, the goal of this study was to evaluate the behaviors and productive responses of broilers subjected to conditions of thermal comfort or challenge at different intensities (27, 30, 33 and 36ºC) and durations (1, 2, 3 and 4 days starting on the second day of life). In the experiment, ten minutes of images from each hour of each treatment were analyzed to evaluate the key behaviors of the birds. Similar behavior at different dry-bulb air temperatures were identified by using Ward's method of cluster analysis. These behaviors were grouped by dendograms in which the similarity of these data was qualified. Feed intake, water intake and body mass of these animals were evaluated and used to support the observed behaviors. Thus, a similar huddling behavior was observed in the birds from the 2nd to the 5th day of life subjected to 27ºC and 30ºC, while at 30ºC and 33ºC the behavior of accessing feeders and drinkers was also similar. Chicks subjected to 33ºC presented the best performance, and at 30 and 36ºC showed intermediate development.	
Tipo: 	Info:eu-repo/semantics/other	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600002	
Editor: 	Associação Brasileira de Engenharia Agrícola	
Relação: 	10.1590/S0100-69162014000600002	
Formato: 	text/html	
Fonte: 	Engenharia Agrícola  v.34 n.6 2014	
Fonte: 	info:eu-repo/semantics/openAccess