Plasma Glucose and Insulin Concentration in Tilapia after Oral Administration of Glucose and Starch

Abstract

Oral carbohydrate administration tests were performed in tilapia. Either glucoseor starch in gelatin capsules were administrated orally after the tilapia were put on a fast for 24h. Blood was sampled at selected time intervals from 1 to 12h thereafter. The concentration of plasma glucose of tilapia peaked at 3 h after oral ingestion of both carbohydrates. Plasma insulin concentration in tilapiaingested with glucose was higher (p<0.05) at 1h after oral administration than those ingestedwith starch and the control group. Plasma insulin dilution curve of tilapia was parallel to the insulin standard curve of human beings.