“…Since the serum Fe (SI) determination represents the portion of the transferrin which was bound to Fe , the total iron-binding capacity (TIBC) is the sum of the SI and the unbound iron-binding capacity (UIBC) (Kaneko and Cornelius, 1970a hormone balance or imbalance, energy needs and others (Swenson, 1970). In the first period (end of growing period) ewes fed high energy-protein diets (3 and 4) HEP + LM and HEP + HM, respectively, were found to be higher (P < .05) in serum glucose (72.8 vs 64.6 mg/DL) , balance = Na -(CI + CO ) (17.7 vs 11.7 meq/L) BUN (25.1 vs 11.0 mg/DL), creatine (1.04 vs 0.96 mg/DL), BUN/creatine (24.2 vs 11.5), P (8.9 vs 6.0 mg/DL), albumin ( 3.52 vs 3.17 g/DL)…”