EFFICIENCY OF SOIL TREATMENT AGAINST CONTAMINATION BY EXOGENOUS PARASITE STAGES

Abstract

The results of many years of research revealed that in the conditions of the Udmurt Republic, in the soil on the territory of the ground runs of livestock enterprises, eggs of nematodes of the suborders Trichocephalata, Strongylata and Rhabdidata, and Eimeria oocysts were found. At the same time, Eimeria oocysts were stationary dominant in terms of quantity per 1 gram of soil (on average, from 204.4±13.9 to 267.4±15.7 pieces). Of the eggs of helminths, exogenous stages of representatives of the suborder Strongylata spp. were most often found, on average 166.1±9.2. In order to assess the effectiveness of soil disinfection on the ground runs, a hot solution of sodium hydroxide (caustic soda) was studied at a 5% concentration at a rate of 1 L/m2 with a 6-hour exposure and a Ligrocid at a 0.25% concentration at a rate of 0.25 L/m2 with 20-min. exposure. The results of our studies showed that when using Ligrocide, the intense-effectiveness of treatment against exogenous stages of helminths from the suborders Strongylata and Rhabdidata was 100%. However, despite its high efficiency, a single treatment does not completely destroy whipworm eggs and Eimeria oocysts. The degree of soil contamination with these parasites remains at the level of 5.6–16.8%. It was found that the soil disinfection on the ground runs of livestock enterprises with 5% sodium hydroxide was ineffective both against protozoan oocysts (intense-effectiveness, 65.6%) and nematode eggs (intense-effectiveness from 20 to 77.8%).