Friedrich M., 1997. Impact of high level of intensive feeding of two-year-old carp (Cyprinus carpio L.)-with feeds differing in fat and carbohydrate composition-on the levels of cortisol, glucose, triglycerides in the blood and on the body weight increments. Acta Ichthyol. Piscat. 27 (2): 127-134.

Intensive culture of two-year-old carp, using a diet with elevated content of fats or carbohydrates causes highly statistically significant increase of cortisol and triglycerides in the blood of both feeding groups and statistically significant decrease in glucose level in the fish fed with high-carbohydrate diet.