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

VALORES ENERGÉTICOS DO MILHO E DO FARELO DE SOJA DETERMINADOS COM POEDEIRAS NA FASE DE PRODUÇÃO

The aim of the present research work, carried out with laying hens in the stage of production, was the determination of both apparent metabolic energy (AME) and the nitrogen corrected apparent metabolic energy (AMEn) of the corn and soybean meals. A total of 84 Isabrown birds aging 24 weaks were alloted in a randomized blocks design, using two basal reference diets containing 19 and 14% of CP, respectively. For the experiment, two samples of corn replaced in 25% the reference diet containing 19% of CP, and three samples of soy bean meal replaced in 15% the reference ration containing 14% of CP. It hás been found significant differences in regard to the energetic values and the metabolic coefficients of the reference diets added with soybean meal. In conclusion, it hás been found that the EMA and EMAn values, expressed as kcal/kg as dry matter, for the three samples of soybean meal were 2,292 and 2,537; 2,248 and 1,963; 3,252 and 2,847, respectively, and for the samples of corn, 3,157 and 3,061 and 3,477, respectively.O presente trabalho teve pôr objetivo a determinação, em poedeiras em fase de produção, dos valores de energia metabolizável aparente (EMA) e da (EMAn) corrigida pelo balanço de nitrogênio, do milho e do farelo de soja. Foram utilizadas 84 aves Isabrown com 24 semanas de idade, distribuídas em delineamento experimental de blocos ao acaso, utilizando-se duas rações-referência com 19 e a4% de PB (Proteína Bruta), respectivamente. No experimento levado a efeito, duas amostras de milho substituíram em 25% a ração com 19% de PB e três amostras de farelo de soja substituíram em 15% a ração com 14%  de PB, tendo sido verificada diferença significativa nos valores energéticos e nos coeficientes de metabolizabilidade das  e de amostras de farelo de soja estudadas. Em conclusão, verificou-se que os valores de EMA e EMAn para as três amostras de farelo de soja foram de 2.992, 2.537; 2.248 e de 3.157 e 3.061; e 3.590 e 3.477 kcal/kg de matéria seca, respectivamente, e de 3.157 e 3.061; e 3.590 e 3.477 kcal/kg de matéria seca para as duas amostras de milho, respectivamente