DOI: 10.26155/vet.zoo.bio.202005009
UDC 636.2: 575.167
Authors
I. A. Kofiadi
Doctor of Biological Sciences, Professor of the Russian Academy of Sciences,
Head of the Laboratory of Molecular Immunogenetics,
State Scientific Center Institute of Immunology of
the Federal Medical and Biological Agency,
Moscow, Russian Federation
I. Yu. Podrechneva
Candidate of Biological Sciences, Head of the Laboratory of Genetics
and DNA Technologies, Kostroma State Agricultural Academy,
Kostroma, Russian Federation
P. O. Shchegolev
Candidate of Agricultural Sciences, Researcher at
the Laboratory of Genetics and DNA Technology,
Kostroma State Agricultural Academy,
Kostroma, Russian Federation
I. I. Kuz’menkov
Candidate of Veterinary Sciences, Associate Professor, Department
of Internal Noncommunicable Diseases, Surgery and Obstetrics,
Kostroma State Agricultural Academy,
Kostroma, Russian Federation
Abstract
During the study, 290 animals belonging to different breeds and age and sex groups were tested by PCR analysis, with 4,1% of positive results. The largest percentage of infected animals was found in Schwyz (10%), Aberdeen-Angus (8,7%) and Black-and-White (5,7%) breeds, the smallest – in Hereford breed (3,7%). Among the animals of the Galloway and Sychevsky breeds positive results were not found. At the same time, positive test results were recorded only in adult animals: in cows of different ages – 6,7%, bulls from one and a half years old – 6,1%.
Keywords
cattle, leukemia, polymerase chain reaction, Aberdeen-Angus breed, Galloway breed, Hereford breed, Sychevsky breed, black-and-white breed, Schwyz breed.
