Absorption of Colostrum Globulins Introduced Directly into the Duodenum

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Abstract
Approximately 1.5 1 of colostrum were infused directly into the duodenum of newborn calves varying in age (6-60 hours old). Proteins from serum withdrawn initially and at 4, 8, and 12 hours following colostrum infusion were separated by electrophoresis. While immune proteins were absorbed by 6 and 18-hour old calves, the immune proteins did not appear in the sera of older calves. These results would indicate that protein digestion by gastric and intestinal enzymes were not the predisposing factor that inhibited immune protein absorption in older calves.

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