Abstract: | The concentrations of serum total lipids, cholesterol and triglycerides of guinea pigs were determined under normal conditions and after 5 days fasting. Serum glucose and liver glycogen levels were also estimated under both conditions. The amounts of serum total lipids and cholesterol were significantly increased as a result of starvation, whereas, fasting had no significant effect on serum triglycerides. Liver glycogen was rapidly decreased in response to starvation in a highly significant manner. However, starvation did not affect serum glucose of guinea pigs. |