Effect of Spirulina Suplemantation to Canola Meal-Containing Goldfish (Carrasius auratus) Diets on Growth Performance, Nutrient Digestibility and Digestive Enzyme Activity

The aim of this study was to determine the effects of spirulina added to diets containing canola meal in juvenile goldfish (Carrasius auratus) on growth, feed utilization, nutrient digestibility and intestinal digestive enzyme activity. In the experiment planned as 4 groups and 3 replications, fish with an average weight of 2.3 ± 0.9 g were placed in 12 glass aquaria with a capacity of 60 liters (60x30x35) with 20 fish per aquarium. Diets were prepared to contain 30% canola meal. 10%, 20% and 30% spirulina was added to the diets except the control diet, respectively. Fish were fed twice a day until satiated for 7 weeks. At the end of the experiment, it was determined that diets containing spirulina significantly (p