Effect of sodium selenite and feed additive “Metisevit plus” on morphological parameters of blood of rats at the intoxication of Cadmium and Lead


Keywords: toxicology, Cadmium, Lead, sodium selenite, feed additive “Metisevit plus”

Abstract

Heavy metals, Lead and Cadmium, are hazardous environmental pollutants. In the body of mammals, Cadmium and Lead have a toxic effect on a number of organs and systems. The mechanism of action of these poisons is to inhibit the activity of enzyme systems by blocking carboxyl, amine and SH groups of protein molecules. The aim of the study was to investigate the effect of sodium selenite and feed additive Metisevit plus on the morphological parameters of rat blood by Cadmium and Lead intoxication. The experiments were carried out on 200–220 g male Wistar rats, out of which 3 groups of animals were formed: a control and two experimental animals. Rats in the control and experimental groups were administered 16.6 % aqueous lead acetate at a dose of 100 mg/kg and 0.029 % aqueous cadmium chloride at a dose of 2.0 mg/kg. The rats of the first experimental group additionally used sodium selenite. The rats of the second experimental group additionally used the feed additive Metisevit plus. Lead-cadmium loading in rats was accompanied by erythrocytopenia and leukopenia. The lowest erythrocyte count was in the blood of diseased rats at 21 days, where it decreased by 41.3 %, respectively, compared to the initial values. It was found that hemoglobin level decreased to 90.3 ± 2.63 g/l during Cadmium and Lead intoxication in control rats. At the same time as the decrease in hemoglobin level and the number of erythrocytes in intoxicated rats, an increase in the average hemoglobin content in one erythrocyte of blood was observed up to 20.57 ± 1.20 pg As a result of the development of lead-cadmium intoxication in ill rats, leukopenia was noted, which, in our opinion, is associated with systemic lesions of cadmium and lead in the blood-forming organs of animals that suppress leukopoiesis. It was found that the number of leukocytes in patients of rats of group C decreased by 36.1 % compared with the initial data. The use of sodium selenite and the feed additive Metisevit plus in rats under lead-cadmium loading contributed to the increase in the number of red blood cells and hemoglobin level, as well as the decrease in the number of leukocytes in their blood. The improvement of normalizing effect on the morphological parameters of blood of rats under conditions of loading with heavy metals was shown by the feed additive Metisevit plus in comparison with sodium selenite.

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Abstract views: 184
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Published
2020-05-07
How to Cite
Slobodian, S., Gutyj, B., & Murska, S. (2020). Effect of sodium selenite and feed additive “Metisevit plus” on morphological parameters of blood of rats at the intoxication of Cadmium and Lead. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Veterinary Sciences, 22(97), 52-57. https://doi.org/10.32718/nvlvet9710

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