ADDING DIFFERENT LEVELS OF DRY ARTEMIA AND FROZEN ARTEMIA SUBSTITUTE FISH MEAL AND EFFECT OF GROWTH CRITERIA FOR COMMON CARP CYPRINUS CARPIO

This study was conducted in the Fish Laboratory / Department of Animal Production / Faculty of Agricultural Engineering Sciences / University of Baghdad for the period from 23/10/2021 to 20/1/2022 with the aim of adding different levels of dried and frozen artemia instead of fish powder for the feeds of fish Cyprinus carpio L. To demonstrate their impact on growth performance, 18 glass tanks with a capacity of 60 × 40 × 30 cm and a capacity of 72 liters were used in the experiment, in which 126 fish were randomly distributed at an individual weight rate of 14 ± 2 g/fish on nine experimental experiments, with 7 fish per tank and repeaters per experiment, the fish were fed to the point of saturation after weighing every 14 days on nine feeds manufactured in the laboratory and were 4 mm in diameter, The protein ratio ranged from 32.19% to 35.76% of the feed and the calories ratio ranged from 2758.6 to 3491.8 kcal/kg, a dry artemia was added to the first, second, third and fourth treatment by 25%, 50%, 75% and 100% respectively and wet artemia was added to the fifth, sixth, seventh and eighth treatment by 25%, 50%, 75% and 100% respectively, in which the growth criteria were studied the final weight rate, daily weight gain and total weight gain. The qualitative growth rate and the relative growth rate showed significant differences (0.05 ≥P) between the experiments in the growth criteria, the seventh experiment (wet artemia 75%) outperformed all experiments in the final weight rate of 317.62 ± 0.02 g / live mass, the rate of total weight gain 42.62 ± 0.22 g / live mass , the rate of daily weight gain 0.50 ± 0.01 g / live mass and the qualitative growth rate of 1.70 ± 0.01%/day and a relative growth rate of 56.02 ± 0.24%/day.