Probióticos na alimentação de equinos

• Ano de defesa: 2017
• Autor(a) principal: Oliveira, Clístenes Gomes de
• Orientador(a): Oliveira Júnior, Gregório Murilo de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Programa de Pós-Graduação: Pós-Graduação em Zootecnia
• Palavras-chave em Português: Zootecnia; Equinos; Suplementos dietéticos; Probióticos; Alimentação e rações; Digestibilidade aparente; Equinocultura; Fermentação; Microrganismos; Leveduras
• Palavras-chave em Inglês: Apparent digestibility; Echinoculture; Fermentation; Microorganisms; Yeasts
• Área do conhecimento CNPq: CIENCIAS AGRARIAS::ZOOTECNIA
• Link de acesso: https://ri.ufs.br/handle/riufs/6959

ABSTRACT: The objective of this study was to evaluate the effect of Saccharomyces cerevisiae yeast supplementation on the senescent equine diet and its effect on performance and apparent nutrient digestibility coefficients. Eighteen castrated male horses, with no defined breed, with a mean weight of 426.167±25.3kg and mean age of 17.5±1.42 years were used. The treatments consisted in the use of different sources of yeasts added to 200g of concentrate, being: control treatment - without addition of yeast (10mL sterile culture medium); Treatment containing yeast Saccharomyces cerevisiae, UFMG 905 in the concentration at 3x108 CFU/mL/day; And treatment containing commercial probiotic composed of Lactobacillus casei >7.9x104CFU/mL, Lactobacillus acidophilus >7.9x104CFU/mL and Saccharomyces cerevisiae >1.5x106CFU/mL. The standard diet was composed of commercial concentrate and Tifton 85 hay (Cynodon spp) in the proportion of 30:70, respectively. The experiment lasted 31 days, with 28 days of adaptation and three days for the digestibility assay. The performance of the animals was evaluated by weight, concentrate feed intake, forage and total diet feed intake. For the determination of the digestibility coefficients, the total fecal collection method was used. The isolation of microorganisms Lactobacillus spp. direct plate counting was used. The design was completely randomized, with three treatments and six replicates, considering the animal the experimental unit. The data were analyzed by ANOVA and Dunnet test, considering 5% of significance for the performance variables and 10% for the digestibility coefficients. The final weight, concentrate feed intake, forage and total diet feed intake did not differ between treatments (P>0.05). However, there was an increase in weight (P=0.03) and higher weight gain (P=0.03) in animals supplemented with yeast UFMG 905. Organic matter, ethereal extract, neutral detergent fiber, acid detergent fiber and non-structural carbohydrates did not differ between treatments (P> 0.05). However, the digestibility coefficients of the dry matter (P=0.05) and the crude protein (P=0.10) were higher in the commercial treatment compared to the control treatment and for the hemicellulose the coefficient of digestibility was lower in the commercial treatment in relation to the control treatment, bacterial growth in UFMG905 and commercial treatments were similar to each other with elevation from 106 to 107cfu/g. In conclusion, probiotic supplementation with Saccharomyces cerevisiae in diets for horses older than 16 years increased weight gain, dry matter and crude protein digestibility, and favored a growth of Lactobacillus spp. could be used as a probiotic. More studies are needed to define optimal yeast concentrations and their effects on horses.