Dietary Particle Size and Nutrient Supply Affect Nitrogen Excretion
The sustainability of the pork industry is impacted by nutrient management. Previous research has shown that decreasing particle size decreases fecal nitrogen excretion, but it may increase urinary nitrogen excretion. Particle size and diet formulations were examined to see the impact they had on nitrogen excretion and energy digestibility. Peas and barley were ground to two particle sizes with limiting in energy or amino acid diet formulations. Particle size affected energy digestibility but not total nitrogen excretion. Diet formulation did not have an impact on energy digestibility and was effective in reducing nitrogen excretion.