Adaptive response of koi carp (Cyprinus carpio koi) to low and high temperatures in experimental conditions

Abiotic factors of the water environment are essential for life hydrobionts. They determined by two main criteria – intensity impact factor and tolerance each species. The work aims to substantiate adaptive capabilities this summer's koi carp (Cyprinus carpio koi) under influence low high temperatures, compare coefficients breathing rhythms research objects. Experimental was carried out in conditions aquarium-basin complex Department Ichthyology Zoology Bila Tserkva National Agrarian University. Two aquariums with a volume 800 dm3 were used experiment. Individuals approximately same size weight (25–30 g) divided into groups. first group fish kept at temperature 11–14 °C 30 days, second 24–29 days. During experiment, there 20 specimens aquarium. This summer koi). Feeding Alltech Coppens Pre Grower feed 15EF, 2.0 mm. Composition ingredients (%) per 1 g feed: raw protein 50; fats 15; fiber 0.80; ash 8.6; phosphorus 1.21. In experimental conditions, changes consumption O2, release CO2 NH3 (per live hour) temperatures °С studied. O2 these summers compared. change respiration (RR) ammonia (N/O) “warm” “cold” increasing analyzed. rhythm oxygen breath different environmental determined. Based on obtained data, reactions year's reduced increased indicators aquatic