Cytogenetic disorders in young cattle vaccinated against trichophytosis

Abstract

This article continues a series of works by the authors devoted to most of the karyopathological effects of vaccines used in agriculture. The authors of the test cytogenetic analysis of the impact caused by the LTF130 vaccine from an attenuated culture of the fungus Trichophyton verrucosum TF-130 L VGNKI in peripheral blood lymphocytes of healthy 30-day-old healthy Holstein Colonial calves. The experiment was conducted on the material and technical basis of two departments: veterinary genetics and biotechnology, epizootiology and microbiology, FSBEI HE “Novosibirsk State Agrarian University”. The authors found that the spectrum of induced cytogenetic disorders included polyploid, hyper- and hypoploid cells, chromatid and chromosome breaks, and single and paired fragments of chromosomes, regardless of the time since the introduction of the vaccine. They did not differ from the spectrum of spontaneously occurring mutations in this species. It was noted that among cells with a changed number of chromosomes, polyploid cells with tetraploid sets (79.3–91.9%) and aneuploid cells with hypoploid sets (45.7–74.3%) of chromosomes predominated. The authors found a decrease in the frequency of polyploid cells seven days after vaccination of calves against trichophytosis to 1.6%, control - 3.4 ± 0.57% (P < 0.01). An increase in the frequency of hyperploid cells 14 days after vaccination of calves against trichophytosis up to 3.69% was revealed due to trisomy (2.91 ± 0.74%, P < 0.05) and tetrasomy (0.78 ± 0.39%, P < 0.01). An increase in the frequency of cells with chromosome aberrations was found 2 and 7 days after vaccination of calves against trichophytosis, respectively, to 5.74 and 5.24% due to breaks (4.49 ± 1.03 and 3.31 ± 0.66%, P < 0.01–0.01) and paired fragments of chromosomes (1.38 ± 0.43%, Р < 0.05).