Особенности раскрытия ростовой и адаптогенной потенции у двух- и трехлеток растительноядных рыб в условиях Калининградской области

Abstract

This article reviews the experiment of growing two-year old three-year old carp, grass carp, silver and bighead carp in experimental ponds of EEF KSTU from May to October 2021 in order to determine their growth and adaptagenic potency. According to the results of the evaluation of growth potential disclosure of herbivorous fish, we observed similar dynamics of the rate of mass accumulation at two and three years of age. Maximum values were observed in summer (July-August) and minimum values in autumn (September-October). Close resolution of growth potency was observed for three-year-old silver and bighead carp. According to the results of the assessment of the disclosure of adaptogenic potency, the highest value of the ecological coefficient was observed for bigheaded carp (70% of the influence on growth from ecological factors). In other groups of two-year-olds, the disclosure of this factor was at an average level (39-56 %), and in three-year-olds it was at a low level (33 %). The survival rate of the study groups did not exceed 80-92%. According to the results of the study, the disclosure of growth and adaptogenic potency for two-year old three-year-old fish in ponds of EEF in 2021 was disclosed at the average level of values, the growing season corresponded to IV fish farming zone.