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Eimeriidoses of minks in the fur farm.

Abstract

The study of the epizootic situation in different regions with eimeriosis (coccidioses) of the order Coccidiida, the family Eimeriidae, the genera Isospora and Eimeria, remains an urgent task. This article presents the results of the study of the parasitic fauna of minks of different sexes and ages in the fur farm of the Guryevsky district of the Kaliningrad region. Samples of fresh fecal masses from 160 minks, 68 of them are young, 92 are adult animals (44 males and 48 females). were taken to the laboratory for the study of parasitic diseases FSBI of HE "St. Petersburg State Academy of Veterinary Medicine", where studies were conducted by generally accepted flotation methods. Two types of Ameriids, Eimeria vison and Isospora laidlawi, were identified in the minks examined. The dimensions of the E. vison oocysts were 16.3-27.7 × 11.6-18.54 μm (average 22.0 × 15.07). The form index is 1.46. The size of oocysts I. laidlawi is long 30.36-36.15 × width 23.9-26.5 μm (average 33.25 × 25.2). The average form index is 1.31. The most common species is E. vison (28.13%). I. laidlawi (20.63%) was in second place. Monoinvasion in 160 of the examined minks was recorded in 92.85%, the association of the two protozoa was established in 7.15% of the infested minks. Among infected animals (84 minks), only in 6 invasions flew in associated way, which amounted to 3.75%. The percentage of coccidia species in this farm in patients with mink was: E. vison - 53.57%, I. laidlawi - 39.29%. In this household, females have a greater extent of invasion with eimeridoses than males (51.85% and 44.7%, respectively), in youngsters of the current year of birth - 57.35%. For the improvement of the economy, all animals were treated with the drug "Stop-coccide", the active ingredient of which is 5% toltrazuril.