Mahir KANYILMAZ, Nazmi TEKELLIOGLU
In this study, it was aimed to investigate the effects of dietary zeolite supplementations on blood parameters of gilthead seabream (Sparus aurata). Zeolite was gradually included into the diets at 0%, 1%, 2%, 3% and 4% and fed to triplicated groups of fish for 10 weeks. Dietary zeolite levels did not affect red blood cell, white blood cell and hemoglobin levels of sea bream. On the other hand, serum glucose levels were linearly decreased whereas triglyceride quadratically increased with zeolite levels. There was a significant quadratic effect of dietary zeolite on serum cholesterol and alanine aminotransferase levels. Blood urea nitrogen, aspartate aminotransferase and alkaline phosphatase levels did not change in a particular trend with dietary zeolite levels, which was the case for sodium, potassium, calcium and magnesium. The results suggest that dietary zeolite inclusion up to 4% did not lead to any health impairment in gilthead sea bream when judged from blood parameters.
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