Intensiv akvakulturada forel baliqlarining o‘sish va oziqlanish xususiyatlariga suv haroratining ta’siri

Abstract

This article analyzes the effects of seasonal changes in water temperature on feeding activity, growth dynamics, and clinical condition of trout reared in artificial concrete ponds, based on the results of a seven-month experimental observational study. During the autumn and winter seasons, at water temperatures of 12–15 °C, as well as in March and April, at 15–17 °C, the fish maintained normal feeding behavior, swimming activity, and responsiveness to external stimuli. Starting in May, an increase in water temperature to 19–20 °C was accompanied by reduced feeding activity, decreased swimming activity, and cases of fish mortality. The initial body weight of the fish was 5–7 g, increasing to 500–700 g after seven months of rearing. External clinical observations and laboratory examinations revealed no parasitic or viral diseases.