THE INFLUENCE OF NUTRITION ON RAINBOW TROUT (ONCORHYNCHUS MYKISS) MEAT QUALITY

Abstract: Feed of high quality is one of the most important parameter which influences fish growth, feed conversion and chemical composition of fish meat in conditions of intensive fish farming. Studies on the influence of two commercial diets on nutritional quality and production results in rainbow trout intensive farming conditions in Pond I and Pond II were undertaken. Obtained values for proteins and fats in feed were significantly higher (p<0.001) in Diet II comparing to Diet I. The average water and ash content was significantly higher (p<0.001) in Diet I in relation to Diet II. The average length and mass of fish were higher in Pond I in relation to Pond II. Calculated values for condition factors, Kf, indicate to a higher production results in Pond II (1.81) in relation to Pond I (1.22). There were not significant differences (p>0.05) in the average content of proteins and ash in fillets of fish from Pond I (17.43 % and 1.19%, respectively) and Pond II (18.69 % and 1.29%, respectively). The average content of water was significantly higher (p<0.001) in fillets of fish from Pond I (79.87%) comparing to fillets of fish from Pond II (75.40%). Average content of fat in fillets of trout from Pond I