作者: Henry Jørgensen , Trakarn Prapaspongsa , Van Thi Vu , Hanne Poulsen
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摘要: Modern pig production contributes to many environmental problems that relate manure, especially in areas with highly intensive systems and regions like Asia where the regulative control is not effective. Therefore, objective of this study was use three different diets varying dietary protein, fibre fat as representative for Danish (DK), Thai (TH) Vietnamese (VN) develop evaluate approaches predict/calculate excretion from growing pigs comparison experimentally determined values. Nine female were used a digestibility balance experiment. Excretion dry matter (DM), nitrogen (N), phosphorus (P) carbon (C) experimental determined. Due highest content, VN had lowest N, P C (73, 49, 73%, respectively) compared DK TH diets. From known diet composition using standard table values on chemical nutrient digestibly, high accuracy (bias) low variation found results could be prediction faeces urine pigs. Calculation based regarding retention body manure normative system (DMNS) showed likewise quite useful quantifying total N P. Overall, demonstrate simple models require cheap normally available information nutrients can give