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Performance and excretion of broiler chickens fed diets containing organic minerals under different environmental temperatures


This study will to evaluate the utilization of mineral organics - Cu, Fe, Mn, Se and Zn in broiler diets to determine performance and the reduction of pollution of this activity. Two experiments evaluating performance and mineral availability will be carried out in winter and summer seasons. Six experimental diets will be used: T1 - control treatment - inorganic mineral supplementation, T2 - organic mineral supplementation, T3 - Reduction of 1/3 of the organic mineral supplementation (T2) and T4 - Reduction of 2/3 of the supplemental minerals organic (T2) T5 - add 1/3 of the organic mineral supplementation (T2); T6 - Increase in 2/3 of organic mineral supplementation (T2). 1080 day-old chicks will be housed in 36 boxes with 30 birds each. For studies of availability, using 144 animals, the excreta are collected in periods from 19 to 22 and 33 to 36 days. In the experiments are determined performance parameters, and carcass characteristics and analysis of trace minerals in excreta and poultry litter. To evaluate the effect of season, environmental and physiological analyzes will be measured. Also, economic feasibility study of the use of minerals will be made. Probably, the final results will indicate that the reduction of the levels of mineral organics in broiler diets provides better utilization of nutrients without impair broiler performance. (AU)

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