| Popis: |
In order to evaluate the effect of supplementation of the yeast Saccharomyces cerevisiae (SC) on an apparent digestibility in horses fed with high ratio concentrate: roughage diet (HC), eight Mini-horses were used: male geldings, mainly 36-months old, with an initial average weight of 113±12 kg. The diet was composed of 70% concentrate pellets and 30% grass hay, with different levels of SC included: 0 g (control), 10 g, 20 g, and 30 g of product concentration of 5×108 cfu/g. The experiment consisted of 15 days of adaptation to the diet, 5 days for data collection and 3 days interval between periods. The apparent digestibility of dietary nutrients were estimated by total faecal collection. The experimental design was a double 4×4 Latin square and data were subjected to analysis of variance and polynomial regression with a significance level of 5%. A quadratic effect was observed in the apparent digestibility of organic matter, neutral detergent fiber, acid detergent fiber and crude protein (P=0.0023, P=0.0334, P=0.0238, P=0.0224, respectively). However, differences were present between treatments including SC. Thus, the results suggest that the level of inclusion of yeast is able to alter the digestion of dietary components. |
