Avaliação do uso de mananoproteínas de parece celular de levedura (Saccharomyces cerevisiae) em rações para frango de corte criados em clima quente e úmido.

Abstract

This study aimed to evaluate the performance and health of broilers reared in hot and humid climate, from the use of mananoproteíns from the cell wall of Saccharomyces cerevisiae yeast, check the response performance to analyze the response in the control of microorganisms Eschehchia coli and Salmonella sp., check the development of immune organs (Bursa of Fabhcius and spleen) and the combined effect of mananoproteíns from Sacharomices cerevisiae yeast with the antibiotic growth prometer halquinol. The experimental design was completely randomized with five treatments, eight replicates and 26 birds per replicate. The treatments were: no addition product ACTIGEN™ (T1); inclusion of 400g on initial ration and 400g in growing / finishing ration with ACTIGEN™ per ton feed (T2); inclusion of 400g on initial ration and 200g in growing / finishing ration of ACTIGEN™ by ton of feed (T3); inclusion of 400g on initial ration and 200g in the growth / finishing ration with ACTIGEN™, per ton of feed + ARC (30 ppm halquinol); No inclusion of the product ACTIGEN™ + ARC (30 ppm halquinol) (T5). No statistical differences were identified in analyzing the performance vahables Average Daily Gain (ADG), Feasibility and Productive Efficiency Ratio (FEPR). Flowever, the means to feed conversion showed differences (P<0.05) between treatments, and the T4 presented better results. Feed intake was also influenced by diet, therefore, there was vahation between the average weekly treatments for feed intake, from ali stages observed (P<0.05), the animais of the T5, showed a higher intake. Treatments were effective on the control of microorganisms, resulting in the healthy animais. It is concluded that the cell wall of Saccharomyces cerevisiae can be compared to the action performance enhancers.