Abstract
A variety of variants of the avian infectious bronchitis virus creates certain difficulties in vaccination. Therefore, the search for new methods of suppressing the reproduction of the virus is an important problem in the poultry industry. Avian infectious bronchitis virus is an acute highly contagious viral disease, mainly of chickens, accompanied by damage to the respiratory organs in young animals and loss of productivity in adult laying hens. The exploitation of medicinal plants is an important topic for both pharmaceuticals and medicine in general. Many viruses have developed resistance to existing drugs, so it makes sense to study plants that contain biologically active compounds that are able to suppress viral activity. The purpose of the research is to show the possibility of using extracts of some plants to inhibit the reproduction of the avian infectious bronchitis virus. It has been shown that at a dose of 3 to 4 μg/ml, plant extracts of Alnus incana, Hedysarum neglectum, Polygonum aviculare, Alhagi pseudalhagi are able to suppress 50% of the reproductive activity of the avian infectious bronchitis virus.
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