Please use this identifier to cite or link to this item:
Title: Behavior of chicks subjected to thermal challenge
Other Titles: Comportamento de pintinhos submetidos a estresse térmico
Keywords: Grouping of data
Productive responses
Agrupamento de dados
Frango de corte
Respostas produtivas
Issue Date: 2014
Publisher: Associação Brasileira de Engenharia Agrícola
Citation: FERRAZ, P. F. P. et al. Behavior of chicks subjected to thermal challenge. Engenharia Agrícola, Jaboticabal, v. 34, n. 6, p. 1039-1049, Nov./Dec. 2014. DOI:
Abstract: 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.
Appears in Collections:DEG - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_Behavior of chicks subjected to thermal challenge.pdf195,71 kBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons