INTRAVENOUS TOLERANCE-TEST TO GLUCOSE AND FRUCTOSE IN PIGS FED SUGAR-CANE HIGH-TEST MOLASSES

Six 30 kg female pigs fed a diet based on sugar cane high-test molasse s and torula yeast (62:34.5 dry basis) were fitted with an indwelling catheter implanted in vena cava and another in the urinary bladder. Th e animals were injected intravenously (iv) with either glucose or fruc tose (1 g/kg body weight) according to a triple 2 x 2 Latin square des ign. Tolerance time (T, min) and clearance rate constant (K, mg/dl/min ) tended to be dependent on the type of hexose injected. Intravenous i njections of fructose increased glucemia and lacticidemia. Lacticidemi a was not influenced by iv injection of glucose. The presence of urina ry fructose and DL-lactate was evident during the complete test (320 m in) in pigs injected intravenously with fructose. It is suggested that tolerance indices for blood fructose in pigs fed sugar cane high-test molasses tend to be Impaired: Fructose, but not glucose does induce l acticidemia and lacticiduria in the pig.