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TITLE:

EVALUATION OF THE EFFECTIVENESS OF DRUGS FOR MINK EIMERIOSIS

AUTHORS:

Yuri Kuznetsov, Larisa Belova, Nadezhda Gavrilova, Nadezhda Kuznetsova, Anton Tokarev

ABSTRACT:

Eimeriozy of minks are widespread diseases that cause significant economic damage to animal farms. The development of new anti-cocci drugs, the evaluation of the therapeutic efficacy of drugs used for the treatment and prevention, remains an urgent task. The aim of this work was to study the therapeutic efficacy of coccidiostats, which have different active substances in their composition, for mink eimeriosis. This paper presents the results of studies that were conducted in the period from 2009 to 2019. in six fur farms located in the North-West region of the Russian Federation. Young mink of 1-12 months old, adult population of females and males aged 1-2 years were used as objects of research. The total number of animals examined in all farms was 6,118 animals, of which 2840 adult animals, of which 1212 were males and 1628 were females, 3278 were young. Coprological studies were carried out in the laboratory for the study of parasitic diseases "St. Petersburg State Academy of Veterinary Medicine." According to the results of laboratory studies, it was found that in the conditions of the North-West region of the Russian Federation, eimeriidoses were found in minks in all surveyed farms. In all animal farms, eimeridoses occur more often in the form of monoinvasions (37.2%), mixinvasion of two parasites was found in 6.15%, and mixinvasion by three protozoa was registered only in 0.57% of cases. The most common among monoinvasions, a species of Ameriid in most animal farms in the North-West region was the species of isospores. - Isospora laidlawi. The extensiveness of invasion by this parasite was 22.16% of the number of animals examined. In second place is the type of Eimeria vison (14.2%). For the prevention of eimeridous invasion, it is recommended to carry out regular processing of the entire population of minks with coccidiostats - at the end of winter (before rutting), at the end of spring (after whelping) and young stock after jigging from females. As drugs of choice for treating minks, “Stop Coccide” and “Eymeterm 5%” are proposed. During the production test, these drugs showed the greatest extrasensitivity: so with isosporosis after treatment with the first drug on the 10th day, this indicator was 96.42%, and with eymerioze - 100%, the second drug - 98.09 and 100%, respectively. Keywords: minks, eimeria, «Isospores», «Eymeterm 5%», «Stop Coccide», «Baycox», toltrazuril.

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