Modelos de predição de frequência de ocorrência de comportamentos de matrizes pesadas.

Abstract

Due to the new European Market demands this research studied the effect of the housing environment in the broiler breeder behavior inside an environmentally controlled chamber, using electronic identification and video cameras. The trial last for nine days and used three commercial breeder genetics within the production peak, using the same feeding management and lightning program as in the commercial housing. Each genetic was placed in a box within the chamber and all birds received the same environmental conditions simultaneously. The breeders were exposed to the conditions of ambient temperature and the air relative humidity was maintained constant while ammonia concentration was measured daily. Behavioral observation was taken referring to two distinct periods: morning and afternoon, due to feeding management, through the observation for 15 min of the video monitoring and the register of the electronic identification, not having human interference in the whole process of data registration. From data collection models were built for predicting behavior using Dummy regression analysis. The behavioral expressions that were significantly affected by the experimental variables were: lying down, foraging and nest occupation.