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The article is devoted to the study of birds’ adaptation in the early development stages through the stress factor impact. To carry out the adaptation, eggs of meat and egg-laying crosses were cooled down to the chosen temperature at certain incubation periods. The developed egg cooling scheme of meat and egg-laying crosses during the incubation period allowed us to increase the hatchability rate by reducing the amount of incubation waste – the blood rings, dormant embryos (7.5-18.5 days) and dead-in-shell chicks. This scheme application has a positive effect on poultry growth, it allows to increase meat yield (by 3.2-3.4%) and egg yield (by 1.5-4.3% for the initial laying hen), which in turn increases the profitability of broiler meat production by 4.1% and 7.7%, and table eggs by 2.6-3.4%, and also confirms the birds’ adaptation to subsequent stresses during the incubation period. According to the research results, patent No. 2613282 ―A method for incubating chicken eggs of meat and egg-laying crosses‖ was obtained. This method is recommended for implementation in production of poultry farms. Keywords—stress, adaptation, claw trimming, egg cooling, incubation, hatchability rate, poultry production performance.

Method of Increasing Bird Adaptation in the Early Stages of Embryogenesis