Comparison of daily urine excretion of N and P obtained in the present experiment with the modified Danish manure normative system (DMNS), Vu et al.  (Vu), calculated amounts based on table values (Tables) and Aarnink et al.  (Aarnink). The experimental values are expressed as least square means (n = 6) with pooled standard errors. DK Danish diet, VN Vietnamese diet, TH Thai diet.