Sulphur Metabolism and Excretion Studies in Ruminants VII. Secretion of Sulphur and Nitrogen in Sheep Pancreatic and Bile Fluids

Abstract

[35S]taurine or [35S]Na2S04 was given as a single intraduodenal infusion and the combined bile and pancreatic (OBD) secretions continuously collected, sampled, and returned. In two sheep 41-51 % of 35S from [35S]taurine was recovered in OBD fluids, less than 1 % in the faeces, and less than 4 % in the urine, over 3 days. When the 35S-labelled OBD fluids were infused an estimated 90-113% of the 35S was recycled; in 6 days less than 2% was excreted in faeces and less than 4% in the urine. With other sheep 6-8% of 35S from [35S]Na2S04 was recovered in the OBD fluids and 63-76% in the urine over 4-5 days. When the 35S-labelled OBD fluids were infused 14--29% of the 35S was recycled.