Abstract
A balance trial was conducted on nine buffalo heifers to determine the effect of urea and urea phosphate on the utilization of some macro and micro mineral elements. The rations contained no urea (A), 2% urea (B) and 5.4% urea phosphate (C). The average daily Ca and P intakes were /i.0 I, 20.80 and 16.90 and 44.42, 31.96 and 85.59 gm on rations A, Band C, respectively. Statistically rations A and B had no effect on Ca and P digestion and retention but ration A had a significant effect on Ca and P absorption and retention. Low Ca was absorbed and retained by the heifers on ration A. Highly significant variation in Mg and Na balance among rations were observed which might be due to urea and urea phosphate. Higher losses of K were observed on urea and urea phosphate rations. Urea and urea phosphate had a significant effect on Fe retention. Digestion of Cu and Mn was poor in control ration (A) as compared to rations Band C.
