Digestibilidade da dieta e desempenho físico de éguas mangalarga marchador suplementadas com saccharomyces cerevisiae durante treinamento em esteira ergométrica

• Ano de defesa: 2012
• Autor(a) principal: Tiago de Resende Garcia
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Levedura; Espirometria; Probiótico; Cavalo; Condicionamento; Nutrição; Digestibilidade; Mangalarga (Cavalo) Alimentação e rações; Suplemento alimentar; Égua Alimentação e rações; Saccharomyces
• Link de acesso: http://hdl.handle.net/1843/BUOS-96FGDS

This study aimed to evaluate the effect of supplementation with Saccharomyces cerevisiae on digestibility, nutrient intake and improvement in athletic performance of Mangalarga Marchador horses on training, as well as evaluate the effectiveness of the training protocol used in the preparation of these animals to marcha competition. Fourteen Marchador Mangalarga mares were divided into two groups: supplemented (S) and control (C). The diet consisted of a commercial concentrate and coast cross hay in the ratio of 50:50. The mares were trained for six weeks, from Monday to Saturday, alternating exercise on a treadmill and automatic walker. Nutrient digestibility was assessed using the LIPE® indicator. DM, NDF, ADF, CP, gross energy, hemicellulose and dry matter intake were analyzed. To the digestibility trial, the experimental design was completely randomized and means were compared by Fisher's test at 5%. Before and after training, maximal exercise tests were performed on the treadmill, using the spirometric mask in order to assess the physical, metabolic and respiratory parameters. To evaluate the physical performance of the mares, the experimental design was completely randomized in a split-plot and means were compared by Fisher's test at 5%. There was no difference (P> 0.05) on apparent digestibility coefficients of nutrients and dry matter intake between supplemented and control groups. There were differences (P <0.05) between tests performed before and after training in time to fatigue, aerobic and anaerobic thresholds, VLa2, VLA4, V200, baseline hemoglobin concentration, percentage of hemoglobin in aerobic and anaerobic thresholds, uric acid level at maximal speed, VO2MAX, VO2, pO2, VE in aerobic and anaerobic thresholds and EqO2 in aerobic threshold. These results demonstrated that the training protocol used in this experiment was able to improve athletic performance. The use of probiotic increased basal concentrations of hemoglobin and the percentage of VO2MAX in aerobic and anaerobic thresholds.