Bioclimatic Patterns With In Tom Turkey Housing

The turkey productive chain has become competith'e and highly speciahzed in the recent years. Desiring to achieve thermal and environmental equilibrium, a joint action of variables including the concentration of CO2 environment temperature and air relative humidity (RH) was evaluated. This study aimed to map the behavior of these variables along the poultry house interior in order to analyze the magnitude and homogeneity facing two different ventilation systems (A1 = poultry house with minimum negative ventilation and A2 = poultry house with minimum positive ventilation). Minimum negative ventilation means that fans on the roof worked to exhaust air, while minimum positive ventilation means that the fans directed the air into the poultry house. In the winter of 2007, two commercial turkey houses of initial production stage were used. The poultry house was located at Francisco Beltrâo city. The data were submitted to an analysis of variance. It was concluded that the minimum positive ventilation system (which injects the air into the house) provided a better themraml environment to the birds: there were similar concentrations of CO2, higher environment temperature (not so much heat loss to the external environment and no need for supplemental heat), and lower internal RH (due to the highest internal temperatures and the highest air movement).651654Anual, R., (1920) 04 da União Brasileira de Avicultura, pp. 52-53. , UBA, Brasilia. DF. pNoll, S.L., Nagaraja, K.V., Halvorson, D.A., Janni, K.A., Air quality in turkey production (2003) Extension Service, , University of MinnesotaFrame, D.D., Buckner, R.E., Anderson, G.L., Causes and control of spontaneous cardiomyopathy or roundheart disease in Utah turkeys (1999) Bulletin AG506, , Cooperative Extension Service. Utah State University, Logan, UTPrescott. NB., and C. M Wasthes. 2001. Light, Poultry and Vision. In: Livestock Environment VI: Proceedings of the 6th International Symposium, Maio de 2001, Louisville, Kentucky, p. 696-702Yahav, S., Plavnik, I., Rusal, M., Hurwitz, S., Response of turkeys to relative humidity at high ambient temperature (1998) British Poidtry Science, 39, pp. 340-345Xin, H., Chepete, H.J., Shao, J., Sell, J.L., Heat and moisture production and minimum ventilation requirements of tom turkeys during brooding-growing period (1998) Trans. ASAE, 41 (5), pp. 1489-1498Goovaerts, P. 1998. Geostatistics for Natural Resources Evaluation. New York: Oxford University Press. Miragliotta. MY. 2005. Avaliaçāo das condiçâ;s do ambiente interno em dois galpôes de produçāo comercial de frangos de corte, com ventilaçâo e densidade populacional diferenciados. Dissertation (Doutorado) - Unicamp, Campinas, SP, 200