Studies of microbial charactersitics of manure produced by pigs fed different energy diets at different pig growth stage

Regulation of labile fraction of discharged manure represents a promising breakthrough for environmental pollution mitigation. However, investigation of the properties of various pollutant fractions within manure and potential influence of dietary nutrient fractions on the presence of labile manure remains unclear. Feeding trials involving pigs at three distinct growth stages (weaning stage, feeding stage and finishing stage), fed by diets with 9 different energy levels were conducted and the characteristics of labile manure generated under various treatments based on nutrient profiles were analyzed. The study examined the response of manure microorganisms to the aforementioned relationships between pig diets and the occurrence of manure pollutants. The findings of this research are expected to provide valuable insights for modifying diet formulations to better control manure source-related issues.