The aim of the research was to study the epizootological features of bovicolosis and sifunculatosis and to determine their biological features. Materials and methods. Eight groups of animals were examined, 15 animals in each, including cows, heifers and calves. Groups of calves consisted of 13 heifers and 17 bulls. A total of 103 females and 17 male cattle were examined. Results. During observations, it was noted that in most cases, certain species of ectoparasites were found on different animals. In the case of their simultaneous parasitism on one animal, populations occupied different parts of the host's body. The causative agents of sifunculatosis (L. vituli) and bovicolosis (B. bovis) were determined. During the study of epizootological features of sifunculatosis and bovicolosis, attention was paid to the seasonality of the invasion – the minimum intensity of the invasion was observed in the warm season, the maximum – in winter. The extent of invasion among calves reached 100 %. The biological features of ectoparasites were studied. According to the data obtained, it was determined that linognathus are greater than B. bovis at all stages of development. Egg size 0.8–0.9 mm, larvae go through all stages of molting from 0.7 mm to 3.3 mm, adults reach a size of 3.3–4.0 mm. However, the eggs of B. bovis reached 0.3–0.5 mm, the size of the larvae 0.4–1.0 mm, adults ranged from 1 mm to 1.8 mm. Conclusions. It was noted that the intensity of the infestation of bovicolosis and sifunculatosis increases in the cold season. The young are most prone to lesions.
The article presents data on the establishment of the possibility of permanent ectoparasites of cattle to transmit pathogens of infectious diseases. Temporary and permanent ectoparasites are a constant threat in cattle farms. Permanent ectoparasites of ruminants can be carriers and reserves of pathogens of infectious diseases, both viral and bacterial etiology. They create additional risks and dangers that prevent the maximum realization of the genetic potential of productive animals. The work was performed during 2019-2020 on the basis of livestock farms of Sumy and Poltava regions, parasitological and bacteriological departments of the Sumy regional state laboratory of the State Service of Ukraine for Food Safety and Consumer Protection. In the conditions of cattle farms, selective parasitological studies of animals for infection with ectoparasites were performed. Detected ectoparasites were placed in test tubes with 70 % ethyl alcohol, in order to further their species identification. To study the contamination of ectoparasites with microorganisms, they were made of saline in a ratio of 1:10. Then the resulting suspension was sown on nutrient media (dense and liquid) to isolate: Listeria spp., Salmonella spp., Streptococcus spp., Enterobacter spp. and Staphylococcus spp. In the course of selective parasitological studies of cattle of different ages in the farms of Sumy and Poltava regions, we found different intensities of animal invasion by hair follicles Bovicola bovis. Pathogenic properties of microorganisms were established by bioassay on guinea pigs and white mice. Pathogenic properties of bacteria of the genus Listeria spp. checked by conjunctival and dermo-necrotic tests on guinea pigs. During the three days of observation, redness was noted at the site of intradermal injection, with a marked increase in local temperature. Conjunctival hyperemia and eye discharge have also been reported. To determine the pathogenicity of E. coli, white mice were infected intraperitoneally. The death of animals was recorded on the third day, indicating the pathogenicity of the isolated E. coli. In a series of microbiological studies, it was found that the hair follicles of Bovicola bovis are carriers of pathogenic coccal microflora: S. aureus, E. coli and bacteria of the genus Listeria spp.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.