Urine pH (Means±SE) for cows fed prepartum DCAD (Tr1) 0.0, -100, -180 (BC1, BC2, BC3) and postpartum DCAD (Tr2) +250 and +350 (AC1, AC2) showing effect of interaction (BC1AC1, BC1AC2, BC2AC1, BC2AC2, BC3AC1, BC3AC2), there is effect of prepartum DCAD (Tr1) between means for cows fed 0.0, -100, -180 (7.5, 7.02 and 5.82), P < 0.005, there is effect of time sample -2, -7 ( 6.45 and 6.68) and -14 (7.21) P < 0.05 and the interaction Tr1 x T, P = 0.247. postpartum there is effect of treatment Tr2 x T time of sample at 14, 7 urine pH (8.15 and 8.17), 2 days after calving pH (7.38), P> 0.05, also there is interaction after calving Tr1 x T time of sample p. 0.05 but there is no interaction after calving from Tr1 x Tr2 x T, P = 0.690.