Testing of express methods of evaluation of rainbow trout egg quality
This work shows results of approbation of two methods for evaluation of egg quality suggested by foreing scientists: on relative increase of egg weight during hardening in water, and patterns of lipid droplets distribution on the surface of yolk. Eggs from individual femals of different age and strains were tested at the Adler hatchery. No positive correlations were found between the rate of water uptake and quality of eggs. It was suggested that environmental conditions and/or rearing methods could influence the structure of the chorion and accordingly the haedening traits. While assessing quality according to lipid droplets distribution, controversial resuits were received which do not correspond with data reports by the creators of the suggested method.