Comparison of abomasal emptying in neonatal calves with a nuclear scintigraphic procedure

The purpose of the present study was to demonstrate that nuclear medicine t echnology allows observation of the effect that milk clotting has on abomas al emptying in the living neonatal calf. Scintigraphic evaluation of abomas al emptying was carried out in 6 healthy male Holstein calves. The calves w ere fed 10% of their body weight daily as whole cow's milk that was divided equally and consumed as 2 feedings via a nipple bottle. One day before the nuclear scintigraphic procedure, the calves were randomly fed whole cow's milk, or an oral rehydration solution (ORS) containing bicarbonate and high levels of soluble fibre was fed for 3 consecutive feedings an hour before the portion of milk. For each calf, both feeding programs were repeated twi ce at a one-week interval. Immediately following administration of the (TC) -T-99m-sulfur-colloid-containing milk, the calves were imaged with the gamm a camera positioned lateral and ventral to the abomasum. Additional right l ateral and ventral views of the abomasum were collected at 15, 30, 45, 60, 90, 120, 150, 180, 210, and 240 min after administration of the radionuclid e. Blood glucose determination were performed at one-hour intervals for 7 h after feeding milk to evaluate milk digestibility in both feeding programs . No significant differences in the results of the glucose absorption test or in the radionuclide counts of the abomasum were found between both feedi ng programs. Scintigraphic evaluation of abomasal emptying was found to be a useful technique for visualization of milk clotting and to test the effec t of an ORS on milk digestibility.