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Different Light Intensity On The Behavior And Welfare Of Commercial Broiler Chicks

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2012 IX International Livestock Environment Symposium (ILES IX)  ILES12-1766.(doi:10.13031/2013.41588)
Authors:   Rimena Amaral Vercellino, Daniella Jorge Moura, Ana Paula Assis Maia, Brenda Batista Lemos Medeiros, Thayla Morandi Ridolfi Carvalho, Douglas D’Alessandro Salgado, Irenilza Alencar Nääs
Keywords:   Keywords: Environmental control, livestock production, poultry

In Brazil, the use of buildings with negative pressure system is increasing. The influence of different colors of side curtains on birds behavior is unknown. Depending on the curtains color its causes more or less luminosity inside the building, especially because the birds are photosensitivity. The luminosity has direct influence on the incidence of leg problems, and the UV rays may prevent it. This research aimed to evaluate the use of different curtains colors of broiler houses with negative pressure system with an emphasis in behavior and the incidence of leg problems. Three poultry farms located in Tiet / SP and Cerquilho / SP were studied, where treatment T1 was a negative pressure broiler house with black curtain, treatment T2 negative pressure broiler house with blue curtain and treatment T3 negative pressure broiler house with yellow curtain. Environmental data, animal behavior and the incidence of leg problems were monitored, during 3 flocks. Also, variable Comfort TA was created to evaluate the environmental conditions of the studied broiler houses. It was found a significant difference in birds behavior between treatments and some of them were related to luminosity. There was no relation between the incidence of leg problems with the light intensity and ultraviolet rays. The behavior of birds was influenced by the environmental variables.

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