INFLUENCE OF SHORT-TERM COOLING EGGS IN THE PROCESS OF INCUBATION ON THE DYNAMICS OF CHANGES IN TEMPERATURE OF EMBRYO OF BIRDS

DOI: 10.26155 / VET.ZOO.BIO.201901016
UDC 636.5.033

Authors

A. N. SUDAKOV
RUSSIAN STATE AGRICULTURAL UNIVERSITY
E. A. ANDRIANOV
VORONEZH STATE AGRARIAN UNIVERSITY NAMED AFTER EMPEROR PETER I
N. Ya. SKOLZNEV, P. I. DUDIN
VORONEZH STATE UNIVERSITY

Abstract

The experiment determined the effect of short-term cooling of the air in the incubator chamber on the temperature of the eggshell and the heart rate of the chicken embryo. The absence of the effect of cooling for a duration of less than 1 minute on the heart rate indicator was established. The effect of the motor activity of the embryo on the heart rate was revealed. The presence of a stepwise decrease in shell temperature due to cooling of the air environment is demonstrated. Data are given on the duration of a decrease in the heart rate after the termination of the temperature effect on the egg. The mismatch between the temperature of the shell and the temperature of the embryo is demonstrated using the thermocontrast mode of incubation.

Keywords

heart rate of bird embryo, thermocontrast mode of incubation, shell temperature.