PROPHYLAXIS METHOD FOR INCUBATING CRAP (C. carpio L.) EGGS

Daniela Radu, M. Costache, Mioara Costache, Nino Marica

Abstract
    The paper presents the results obtained in the experiments carried out to control fungal infestations during the incubation of carp eggs. Experiments were carried out between 15 -24 May 2020 at the artificial fish breeding station at F.C.R.D.S. Nucet. Several concentrations of formalin (1 ml / l, 1.67 ml/l and 2 ml/l) and table salt (NaCl) (1 g / l, 3g /l, 5 g/l) were used to determine the duration and frequency of treatment for carp embryonated eggs. The effectiveness of formalin solutions was evaluated compared to that of table salt solutions by comparing the rate of hatching and larval survival. The results showed that formalin treatments, at a concentration of 1.67 ml / l for 15 minutes, inhibited fungal growth on the surface of embryonated eggs, resulting an incubation survival rate of 79.1% compared to untreated control samples.