title: [Prediction of the periods favorable for the development of gastrointestinal nematodes in sheep in various climatic regions of Bulgaria].
abstract: Bioclimatogrammes have been worked out for the various regions of the country to foretell the periods during which the microclimatic conditions in them favour the development of the preparasitic forms of gastrointestinal nematodes of sheep in the environment. It was found that best for the worms of the Heamonchus genus were the conditions in the May-June period, and in some regions in July too. There were in individual climatic regions conditions that were best in the months of September and October. The preparasitic forms of nematodes of the Ostertagia and Trichostrongylus genera could develop throughout the pastures in almost all climatic regions of the country during the April-July period with a month prior to and after this term as well as during the October November period.
mesh_terms: D000818:Animals; D002031:Bulgaria; D002980:Climate; D005767:Gastrointestinal Diseases / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D005843:Geography; D009349:Nematode Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D011379:Prognosis; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000469:parasitology
vernacular_title: Prognozirane na periodite, blagopriiatni za razvitie na stomashno-chrevnite nematodi po ovtsete v razlichni klimatichni raĭoni na stranata.