The effect of Omeprazole on colostral total IgG absorption in neonatal lambs

Omeprazole as an inhibitor decreases abomasal acid secretion. On the other hand, acidity would be a determinant for absorption of Immunoglobulins. The aim of this study was to evaluate the effect of increasing abomasal pH due to Omeprazole administration on the rate of intestinal immunoglobulin absorption in newborn lambs. 30 lambs immediately after birth were divided into 6 groups of 5 animals each as follows: Group1; The lambs received colostrum from birth to 84 hours after birth. Group2; The lambs were fed by colostrum + Omeprazole (4mg/Kg) from birth to 84 hours after birth. Group 3; The lambs were given milk for the first 24 hours and after then until hour of 84 by colostrum + Omeprazole. Group 4; The lambs were fed with milk + Omeprazole for the first 24 hours and after then until hour of 84 with colostrum + Omeprazole. Group 5; The lambs received milk for the first 6 hours after birth and after then received colostrums until hour of 84. Group 6; The lambs were fed with milk + Omeprazole in the first 6 hours after birth and after then until hour of 84 by colostrum + Omeprazole. Blood samples were collected at 0,24,48,72 and 96 hours after birth. The total IgG was measured by ELISA method. Serum IgG levels in group 4 showed significant decrease when compared with the control (group 3). However, no significant difference was shown in the serum IgG levels among groups. The results of this study showed that after birth increase in abomasal pH do not make effect on IgG absorption.