The effect of dietary supplement spirulina (Arthrospira platensis) on the immune system and blood biochemical factors of koi fish (Cyprinus carpio carpio)

This study evaluated the effect of diets containing 0, 2.5, 5, 7.5 and 10% Arthrospir platensis on the hematological and immune parameters of Koi carp (Cyprinus carpio). A completely randomized experimental design was developed with five treatments and three replicates for 8 weeks. At the end of experiment, the hematological and, immune system parameters were measured and analyzed. The results revealed that supplementation of Arthrospira platensis in diets results in higher percentage of Hb, Hct, RBC and WBC. In addition, a significant increasein the levels of IgM, lysozyme and C4 complement levels were found in fish fed with 10% Arthrospira platensis (p