Out of73 washing samples from commonly used vegetable viz. dhania (14), coriander (Coriandrum sativum) (12), pudina (11), spinach (Spinacia oleracea) (9), carrot (15) and raddish (12) collected either from local vegetable markets or residences, only 2 carrot washings and one radish washing were found positive for strongyle ova and one dhania sample was positive for ascarid ova.

General characteristic of parasitologic situation at the exclusion zone, some aspects of new conditions influence on separate systematic groups of mammal parasites Polesye State Radiation and Nature Reserve of the Republic of Belarus were presented. Research of helminth fauna and helminthological situation was realized by an example of 1 European bison, 7 mooses, 20 roe deers, 26 boars, 25 wolves, 50 racoon dogs, 6 foxes and 3 beavers. Scatoscopy of the animal excrements was realized by Kalantaryan method with saturated solution of sodium saltpeter, Berman method. Research results revealed 66 helminth species belonging to 4 classes and 34 families. There were found 10 parasite species at bison, 16 – at mosses, 17 – at roe deers, 16 – at boars, 8 – at deers, 23 – at wolves, 13 – at raccoon dogs, 13 – at foxes, 9 – at badgers and 1 – at beavers. Analyze of helminthofauna of the analyzed area showed that the nature reserve had its own helminthes complex. A lot of stated helminth species were parasites with a wide range of hosts, including domestic animals, and cattle. Wolves, foxes and raccoon dogs were hosts of some custodies invasions. Carnivorous animals and murine rodents were hosts of trichinosis invasion, which was stated at 41,2 % of raccoon dogs, 33,3 % of foxes and 16,7 % of wolves. Also trichinas were stated at bank vole (1,3%), yellow-necked mouse (2,7%), and house mouse (16,6%)

Determination of interactions of monoinfestations and associations of parasites with the normal microflora of intestines of sheep was realized in the conditions of the Republic of Belarus. In the conditions of low associative infestations with Moniezia sp., Strongylata and Strongyloides nematodes, Eimeria protozoa there were stated changes in intestine microflora of sheep: sharp decrease of quantity of bifidus bacteria and lactic acid bacillus, colibacilli with the simultaneous presence of lactose-negative Bacillus coli, increasing number of aerobic bacteria. Recovery of monieziae in the conditions of presence in parasitocoenosis composition of nematodes of suborder Strongylata and Strongyloides species, Eimeria promoted the restoration of quality and quantity composition of microflora of sheep gastrointestinal tract

Problem of ruminant monieziasis is widely distributed in the Republic of Belarus. For the eradication of farm holdings and complexes there was proposed a complex of measures which included the application of highly efficient anthelmintic agents, including preparations for injection therapy and prolonged substances for intrajejunal administration (boluces).

Investigation of vitamin supply of cattle affected by fascioles in association with strongylatosis of gastro-intestinal tract was realized in the conditions of the Republic of Belarus by an example of white-and-black 3-8 year old cows. Analysis of blood and blood serum of experimental animals showed that content of B1, B2, and E vitamins was lower in group of animals sick with fascioliasis and strongylatosis of gastro-intestinal tract. There were stated no changes in A and C vitamins content. Content of pyroracemic acid exceeded control indexes and was 22,0 +/- 0,173 mg/l. Content of vitamin A did not change and was 0,011 +/- 0,0012 mg/l for sick animals and 0,013 +/- 0,0043 mg/l at healthy animals. Content of vitamin C was different for sick and healthy animals: 1,685 +/- 0,190 mg/l and 1,93 +/- 0,294 mg/l, respectively. Research results proved that treatment of cattle sick with helminth infestation should be realized in complex. It was proposed to apply premixes and vitamin preparations containing B1, B2, as well as A, E, and C vitamins for the increasing of natural protection and for the creation of unfavourable conditions for disease agents