USO DE LEVEDURAS (Saccharomyces cerevisae), PAREDE CELULAR DE LEVEDURAS (SSCW), ÁCIDOS ORGÂNICOS E AVILAMICINA NA ALIMENTAÇÃO DE FRANGOS DE CORTE

This study was accomplished with 2.520 chickens males to verify the effect of the simbiotics use in the feeding of males chickens (yeasts Saccharomyces cerevisae and mananoligossacharides), comparatively the added of aluminosilicate of sodium cellular wall of yeasts and calcium, a mixture of organic acids constituted by lactic acid, citric acid and fumaric acid, a growth promoter (Avilamicin) and a negative control. The diets were the corn base and soy crumb. A completely randomized experimental design was used, and the obtained data were evaluated by analysis of variance and test of Tukey at a level of 5%. The appraised parameters were: ration consumption, weight gain, alimentary conversion and European Factor of Efficiency (EEF). In the initial apprenticeship of life of the birds (1 to 21 days of age), the growth promoter's inclusion presented an inferior result to the other tested treatments, that you/they didn't differ amongst themselves. Being considered the total period (1 to 42 days of age) the analysis of the European Factor of Efficiency that whole summarize the results and economical of the treatments, it allows to end that the substitution of antibiotics for simbiotics (yeasts and mananoligossaccharides) it is a viable and economical alternative.