Dynamics of Hematological Indicators of Chickens under Stress-Inducing Influence

Abstract

O. Gorelik, S. Harlap, N. Lopaeva, T. Bezhinar, V. Kosilov, P. Burkov, I. Ivanova, S. Gritsenko, I. Dolmatova, O. Tsareva, S. Safronov, M. Ali Shariati, M. Rebezov

Deviations from optimal environmental conditions, including external conditions of keeping and feeding birds, often lead to so-called technological stresses. The effect of stress affects the cellular composition of the blood. Assessment of baseline blood parameters of chickens before stress-induced exposure in groups I and II showed that they had different gas exchange rates, which reflected on the oxygen supply of the body. Before stress (background) in the blood of two-linear chickens (group I), the number of red blood cells was 3.25 ± 0.06 1012/ , white blood cells 23.10 ± 1.02 109/l, hemoglobin 67.61 ± 2.49 g/l, average erythrocyte hemoglobin content 19.56 ± 0.52 Pg. In group II, the number of red blood cells in the peripheral blood was 3.80 ± 0.06 1012/L, white blood cells 27.10 ± 0.93 109/L, hemoglobin 83.91 ± 1.86 g/L. The effect of the stress factor in the form of a vibrational effect initiated a decrease in the concentration of red blood cells in the bloodstream of chickens, regardless of a series of studies. The cell level in hybrid birds obtained at the poultry farm decreased by 12.36% (p<0.01) compared to the background, and by 15.38% imported from Germany. In the body of chickens obtained at the poultry farm, 1 hour after exposure to the stress factor erythropoiesis stimulation was observed, compensating for the loss of red blood cells and increasing the hemoglobin concentration to 101.45 ± 2.83 g/l, as well as the value of SIT. The red blood cells and erythropoiesis organs in the body of chickens obtained at the poultry farm (group II) had a high reactivity, which allowed the body to quickly compensate for the lack of oxygen and metabolic substrates.

Keywords: Chickens; Cross; Blood; Red blood cells; Stress factors
 

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