Indicators and influence of infection with Buxtonella sulcata (Jameson, 1926) in BLV infected cows

The article cites data on the infection of, depending on the infection BLV. Using PCR-RV, the lack of transmission of the BLV through the cysts of the infusoria of Buxtonella sulcata was determined. According to the results of the research, the incidence rate of cattle was 85% in January, 35% in April, 40.1% in June, 65% in October; 95% for RID-positive cows in January, 55% for April, 25% for June and 80% for October. The intensity of cyst infestation per gram of feces on average per head in cows, without BLV was in January - 87, April - 154, June - 67, October - 102; the RID-positive cows for leukemia in January - 119, April - 188, June - 56, October - 215. In general, infection with Buxtonella sulcata from RID-positive cows in the study was higher 7.3% on average, an intensity on 42 cysts / gram. These results showed an inversion of buxtonellosis in cattle in the presence of the BLV. 30 tests from the cysts from the RID-positive cows in PCR-RV, negative results were obtained in all samples, this may indicate the absence of an endobiotic transmission of the leukemia virus through the Buxtonella sulcata intestinal cysts. On the other hand, taking into account the fact that clinical signs with the use of buxtonellosis appear with the infusion of more than 1000 cysts per 1 g of feces, and in our case the infection was low or medium, and this can affect the negative result.