Estimation of nutrients and organic matter in Korean swine slurry using multiple regression analysis of physical and chemical properties

► Swine slurries are observed wide variations in its nutrients and organic matters. ► It is predicted using hydrometer, electrical conductivity meter and an drying oven. ► Specific gravity, electric conductivity and total solids signify the manure quality. ► Multiple property correlations significantly improved prediction of micronutrients. ► Prediction equation must be developed each animal farm for better manure management.