Effect of dietary nucleotides on hematological and serum biochemical parameters of juvenile common carp (Cyprinus carpio)

The impact of different levels of dietary nucleotides (Optimon diet, as a growth promoter containing nucleotide) on some serum biochemical indices of juvenile common carp, Cyprinus carpio (4.74 ±0.2 g), was assesses during an 8-week period. The experimental fish were kept in 70 L tanks with a storage density of 20 fish per tank. Dietary nucleotides in 4 levels of 0 (control), 0.5, 1.0 and 1.5 percent were added to the diet (triplicate). After 8 weeks, serum biochemical parameters including glucose, total protein, cortisol, C3 and C4 in fish fed diets with nucleotides showed significant differences compared to the control group (P>0.05). The highest amount of serum biochemical parameters were observed at 1% dietary nucleotide. The results indicated that dietary nucleotides can change hematological and serum biochemical parameters in juvenile common carp.