Author:
Fatakhov Kurban,Marzanova Saida,Devrishov Davudai,Marzanov Nurbiy
Abstract
Systematic analysis, statistical review of literature data from domestic and foreign sources on the topic of parasitic diseases and their importance worldwide were used in the work. The search was carried out in eLibrary, Cyberleninka, PubMed, IPD immunologic database and on the ResearchGate website according to the developed strategy, taking into account the inclusion and non-inclusion criteria. The depth of the search was 53 years. The study of literature data revealed that sheep parasitoses have a wide ubiquitous distribution and are a serious problem for agriculture. According to the results of careful study of literature data it was revealed that in the territory of the Russian Federation and in other countries of the world the most widespread nematodoses of the digestive tract of sheep are haemonchosis, ostertagiosis and nematodirosis. Depending on the season of the year, geographical area and age of the animal, the intensity of infestation with haemonchosis ranges from 28,0 to 70.0 %, nematodirosis 2.2 – 48.2 %, ostertagiosis 16.0 - 82.7 %.
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