Кафедра інфекційної патології, гігієни, санітарії та біобезпеки

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30 років від часу розробки першої ДНК- вакцини.
(2022-11) Тітаренко, Олена Вікторівна; Микитенко, Анжеліка Олександрівна
Biological specifics of exogenous development of Oxyuris equi nematodes (Nematoda, Oxyuridae)
(2020) Yevstafieva, V. O. ; Євстаф’єва, Валентина Олександрівна; Prykhodko, Y. О.; Kruchynenko, O. V. ; Кручиненко, Олег Вікторович; Mykhailiutenko, S. M.; Михайлютенко, Світлана Миколаївна; Kone, M. S. ; Коне, Мохамед Сумана; Кручиненко, Олег Вікторович
Body weight of different genealogical lines of the gray Ukrainian breed of heifers as a factor of determining its consolidation and crossing efficiency
(2021) Voitenko, S. L.; Dzhus, P. P.; Sidorenko, E. V.; Петренко, Максим Олександрович
Chlamydial infection monitoring within wild mammals in Ukraine
(2019) Коне, Мохамед Сумана
Comparison of antimicrobial activity of plant tinctures and chemical disinfectants
(2025) Kruchynenko, O. V.; Кручиненко, Олег Вікторович; Zamaziy, A. A.; Замазій, Андрій Анатолійович; Petrenko, M. O.; Петренко, Максим Олександрович; Lavrinenko, I. V.; Лавріненко, Інна Вікторівна; Khyl, A.
Disinfection in veterinary medicine is a complex of measures aimed at destroying pathogens of infectious animal diseases to ensure safe conditions for their keeping and prevent the occurrence and spread of infections. The pharmacological properties of plant extracts are of considerable significance for further research of substances as potential components of preventive veterinary medicinal products. The results of a study on the effectiveness of the following disinfectants are presented in the article: Iodoclean, Virosan, Ioderin, Multiclean Aqua, as well as chamomile and hawthorn tinctures. The antibacterial activity of the alcoholic tinctures and chemical disinfectants was assessed by measuring the zones of micro-organisms’ growth inhibition around the wells containing the test substances, using the agar well diffusion method. The study was aimed at comparing the effectiveness of 40 % chamomile tincture, 70 % hawthorn tincture, and Iodoclean, Ioderin, Multiclean Aqua, and Virosan chemical preparations against the sanitary indicator micro-organisms of Staphylococcus aureus, strain 209 and Escherichia coli, strain 1257.When determining the zone of inhibition of E. coli growth, Iodoclean demonstrated the highest activity with the zone of inhibition of 25 mm. Virosan was somewhat less active (24 mm), which is 1.04 times lower than Iodoclean. Multiclean Aqua and Ioderin disinfectants demonstrated the activity 1.19-1.25 times lower than Iodoclean. Chamomile tincture demonstrated the activity 2.08 times lower, and hawthorn tincture – 3.57 times lower, with the zone of inhibition of only 7 mm. In the study of the inhibition zones against Staphylococcus aureus, Virosan showed the greatest activity with the inhibition zone of 25 mm. Iodoclin and Multiclean Aqua were slightly less active, being 1.08 times lower than Virosan. Ioderin provided the inhibition zone of 22 mm, which is 1.13 times lower than that of Virosan. Chamomile and hawthorn tinctures turned out to be less effective compared to the other disinfectants. Their inhibition zones made 14 and 8 mm, respectively, which are 1.78 and 3.12 times lower than Virosan’s indicators
Current state of soil microbiota in the Zaporizhzhia region of Ukraine
(2025) Melnychuk, V. V.; Мельничук, Віталій Васильович; Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна; Bilan, M.; Zazharskyi, V.; Zazharska, N.; Davydenko, P.; Plys, V.; Shapran, I.; Yakovenko, V.; Zamaziy, A. A.; Замазій, Андрій Анатолійович
The destruction of the Kakhovka HPP led to large-scale changes in the natural ecosystems of the Zaporizhia and Kherson regions of Ukraine, including changes in the soil microbiome. The research in the territory of Zaporizhia Oblast revealed natural, intensive phenomena of soil cover purification from organic matter contamination, including feces, occurring in the drainage zone formed as a result of the destruction of the dam. Sanitary state control allows us to assess the safety of soils for the environment and determine the possible impact on humans. Thus, a local contamination was revealed. The sanitary state of the soil was characterized by the presence of sanitary indicator microorganisms (Escherichia coli, Enterococcus spp., Klebsiella spp., Enterobacter spp., Citrobacter spp., and Clostridium perfringens), which indicated fresh or old fecal contamination. The detection of thermophilic bacteria, Bacillus spp., and saprophytic fungi was correlated with the degree of organic matter transformation processes and stages of soil self-purification. In the soils in unsatisfactory sanitary condition, the coli titer the perfringens titer measured ≤ 0.9 and ≤ 0.009, respectively. Pathogenic Salmonella spp. were not detected in any of the soil samples, yet Mycobacterium spp. were isolated. In the soils of the drainage zone of most of the studied transects, the presence of E. coli and sulfite-reducing bacteria was established. The results obtained can be used for further monitoring and control of the sanitary condition of soils affected by the destruction of the Kakhovka HPP in order to prevent the spread of pathogenic microorganisms in natural ecosystems
DIAGNOSIS AND ACTIONS FOR LIQUIDATION OF DOGS STREPTOCOCCOSIS IN PRIVATE NURSERY
(2019) Peredera, R. V.; Lavrinenko, I. V.; Peredera, O. O.; Zhernosik, I.A.; Передера, Роман Вікторович; Лавріненко, Інна Вікторівна
Differential diagnosis of Dirofilaria immitis nematodes (Nematoda, Onchocercidae)
(2021-12) Kryvoruchenko, D. O.; Prykhodko, Y.; Mazannyі, O.; Titarenko, O. V.; Reva, I.; Sherstiuk, L.; Тітаренко, Олена Вікторівна
Disinvasive activity of modern disinfectants against Ascaridia galli nematode eggs
(2025) Melnychuk, V. V.; Мельничук, Віталій Васильович; Kovalenko, O.; Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна; Zamaziy, A. A.; Замазій, Андрій Анатолійович; Dolhin, O. S.; Долгін, Олександр Сергійович
Maintaining the well-being of poultry farms, increasing the number of birds, as well as enhancing their productivity depends on the implementation of therapeutic and preventive measures. Compliance with zoohygienic requirements and veterinary and sanitary rules for keeping chickens ensures veterinary well-being of farms, including with regard to nematodoses of the digestive tract. The aim of the research was to determine the disinvasive activity of modern disinfectants against eggs of the nematode Ascaridia galli, which parasitizes chickens. Under laboratory conditions, the destructive effect of domestically produced disinfectants was determined, including "Kristal-900" (active ingredients: glutaraldehyde, glyoxalaldehyde, benzalkonium chloride), "Creolin" (cresols, naphthalene, resin acids, pyridine bases and emulsifiers) and "Desirex Forte ParvoStop" (quaternary ammonium compounds, glutaraldehyde, non-inogenic surfactants) on a test culture of ascarid eggs isolated from the gonads of female nematodes. The conducted studies have established a high level of disinvasive effectiveness against A. galli nematode eggs of the following agents: "Krystal-900" – at 1.5 % concentration with exposure times of 1 h, 2 h and 3 h (90.3 %, 94.0 % and 100.0 % respectively); "Creolin" – at 4.0 % concentration for exposures of 2 and 3 h (92.9 and 100.0 % respectively) and at 5.0 % concentration for all exposure periods (100.0 %); "Desirex Forte ParvoStop" – at 0.5 % concentration with exposure times of 2 and 3 h (93.7 and 100.0 % respectively). Lower concentrations of the tested disinfectants, depending on the exposure duration, had either satisfactory or unsatisfactory levels of disinvasion efficiency against the eggs of the nematode A. galli. The destructive effect of disinfectants was accompanied by changes in the morphological structure of the eggs, which were characterized by the arrest of their development and loosening of the embryo; destruction and loosening of the eggshell, disintegration of both the embryo and shell, and larval death. The obtained research results allow us to recommend the disinfectants "Krystal-900", "Creolin" and "Desirex Forte ParvoStop" in specific application regimens for the effective control and prevention of ascaridiosis in chickens
Ecotoxicological assessment of waste from oil production
(2022) Писаренко, Павло Вікторович; Pysarenko, P. V.; Samojlik, M.; Тараненко, Анна Олексіївна; Taranenko, A. O.; Лавріненко, Інна Вікторівна; Lavrinenko, I.; Mostoviak, I.
Utilization of mineralized fossil water (MFW), as a by-product of oil production is a special environmental prob lem in oil and gas areas. In Ukraine the annual production of mineralized fossil water together with oil is estimated at about 20 million tons. Taking into account that MFW is an aby-product of oil production, they are usually placed in waste disposal sites and can contaminate environment. It was determined that toxicological properties of min eralized fossil water have not been studied so far. There is the need for study of toxicological features of the MFW which will allow to determine its hazard class and to develop some measures for safe usage of this drug for making the agriculture more ecological. Thus, in the work we have made the assessment of ecotoxicological properties of MFW as an environmentally safe substitute for agrochemicals. It was established that MFW is referred to low-tox ic compounds. LD50 for oral introduction of the compound in the bodies of white female rats is more than 21,000 mg/kg, female mice – 31,000 mg/kg, male mice – more than 20,000 mg/kg; when applied to the skin of rats – more than 8000 mg/kg. The value of LD50 when applied to the inhalation routes of entry for female rats is more than 5000 mg/kg. It was justified that by oral route of entry and skin penetration the MFWs belong to the IV class of danger, and by inhalation route of entry – to III class. It was also determined that MFW does not have an irritating effect on the skin and mucous membranes of the eyes. There is also no sensitizing effect on the body of guinea pigs. Studies have shown that the cumulative properties of MFW are weakly represented. The accumulation coefficient is greater than 5. At a dose of 4260 mg/kg MFW has cardiotoxic effect, it affects the process of erythropoiesis and increases filtration and excretory function of the kidneys. Ineffective dose for rats in a subchronic experiment is 2130 mg/kg. These results of ecotoxicological study of MFW make it possible to confirm that its usage is safe in the agricultural system, especially as environmentally friendly organo-mineral fertilizer, herbicide, and fungicide.
Effect of disinfectants on viability of Trichuris skrjabini eggs.
(Regulatory Mechanisms in Biosystems, 2023-05-19) Yevstafieva, V. O. ; Petrenko, M. O. ; Peleno, R.; Nikiforova, O.; Vakulenko, Y. V.; Reshetylo, O.; Kone, M. S. ; Євстаф’єва, Валентина Олександрівна; Петренко, Максим Олександрович; Вакуленко, Юлія Валентинівна; Коне, Мохамед Сумана
Effect of disinfectants on viability of Trichuris skrjabini eggs. trichurosis; sheep; embryogeneses; chemical preparations; ovocidal effect; disinfestation. The nematodoses are considered the most numerous group of cosmopolitan diseases among animal and human parasitoses. The representatives of the genus Trichuris attract special attention as pathogens of nematodoses. Their high fecundity, resistance to the influence of environmental factors and the ability to disperse create a serious ecological hazard and the risk of new outbreaks of infestation. The aim of the research was to establish the ovicidal efficiency of modern disinfectants on the embryogenesis of eggs of Trichuris skrjabini nematodes isolated from sheep. In laboratory conditions, two preparations were tested, DZPT-2 (mixture of glutaraldehyde, sodium dodecyl sulfate, essential oil) and Dixclor (mixture of sodium bisulfate, sodium chlorite, sodium percarbonate) at different concentrations and times of exposure. We established that DZPT-2 disinfectant showed a high level of ovicidal efficiency (97.5–100%) against T. skrjabini eggs at 4.5% concentration during exposure for 6–12 h and 5.0% concentration during exposure for 3–12 h. Dixclor showed a high level of ovicidal efficiency (100%) against Trichuris eggs at a concentration of 0.24% for exposures of 12 and 24 hours. Decreasing the concentration of disinfectants reduced the level of their ovicidal efficiency and led to the development of a greater number of viable eggs of T. skrjabini. Degenerative changes in the test cultures of T. skrjabini eggs caused by the tested disinfectants were characterized by the appearance and accumulation of air bubbles under the egg shell, the cessation of embryonic development at the bean-like embryo stage, loosening and resorption of the embryo inside the eggs, thinning and destruction of their shell, deformation of the eggs, and swelling of the egg plugs. Such destructive changes in eggs in experimental test cultures were also confirmed by the indicators of their morphometric parameters. Under the influence of DZPT-2 and Dixclor on the 54th day of cultivation, the length of the eggs was lower by 3.9%, and their width was greater by 4.8–5.1% compared to similar indicators in the control test culture. The obtained results allow one to recommend the tested disinfectants in defined and effective concentrations and exposures for effective control and prevention of trichurosis on livestock farms.
Epitheliocystis: Development of PCR assay for the monitoring among the commercially important aquaculture species of Ukraine
(2019) Zezekalo, Viktoria Kostyantynivna; Peredera, S. B.; Pochernayev, Kostyantyn Fedorovych; Petrenko, M. O.; Shatokhin, Pavlo Prokhorovych; Titarenko, O. V.; Передера, Сергій Борисович; Петренко, Максим Олександрович; Тітаренко, Олена Вікторівна
Histological changes in the experimentally damaged bone tissue of rabbits following injection of stem cells
(2025) Savchuk, T. L.; Mazurkevich, A. Y.; Malyuk, M. О.; Kharkevych, I. O.; Bokotko, R. R.; Kladnytska, L. V.; Masalovych, Y. S.; Paramonova, Y. V.; Zhuk, Y. V.; Dymko, R. О.; Kruchynenko, O. V.; Кручиненко, Олег Вікторович
Bone defects are the results of pathological factors that disrupt the integrity of the bones and cause losses of the bone tissue or its absence. Disruption or hindering of the regeneration processes of the damaged bone tissue due to complications occur at a quite high rate and are the main problems in the bone tissue engineering. An effective treatment option is mesenchymal stem cells of mammals. In fact, they are considered the most promising type of autoimmune and allogeneic material in the cell regeneration therapy. We conducted a histological analysis of the damaged tibia of the rabbits following the injection of allogeneic mesenchymal stem cells. For this purpose, we used the mesenchymal stem cells from the bone marrow of the rabbits. The cells were cultivated in a CO2 incubator using standard methods. The injury of the bone tissue was modeled using a surgical drill on the three-month-old rabbits of the chinchilla breed, in the middle third part of the diaphysis of the tibia. The animals were locally injected with allogeneic mesenchymal stem cells. The tissue samples from the defect region for histological studies were collected on days 3, 7, 14, 21, 28, and 42. The obtained histological sections from the injured area had been stained with hematoxylin-eosin and were analyzed under a microscope. The histological analysis of the experimentally damaged tibia revealed that the injection of allogeneic mesenchymal stem cells expedited the formation of fibrous connective tissue and fibrocartilage callus, stimulated osteogenesis, and promoted a consolidation of the bone tissue. At the same time, we observed the healing of the defect, which completed almost on day 28 of the study in the experimental animals, in contrast to day 42 in the control animals. We assume that mesenchymal stem cells – as multipotent stem cells – have immunomodulating properties and the capacity to osteogenically differentiate. Also, we think that allogeneic mesenchymal stem cells intensified the regeneration processes and enhanced the phases of reparative osteogenesis in the defect zone of the tibia
Hoof Pathologies in Cattle
(2026) Kulynych, S. M.; Klymas, А.; Shabalin, O.; Zvenihorodska, T.; Petrenko, M. O.; Kolomak, I. O.; Tul, O. I.; Slynko, V. H.; Avramenko, N. О.; Panasova, T. G.; Omelchenko, G. O.; Кулинич, Сергій Миколайович; Петренко, Максим Олександрович; Коломак, Ігор Олегович; Туль, Олександра Іванівна; Слинько, Віктор Григорович; Авраменко, Наталія Олексіївна; Панасова, Тетяна Георгіївна; Омельченко, Ганна Олексіївна
Hoof pathologies are among the most widespread orthopedic disorders in dairy cattle and are a major contributor to reduced animal welfare and productivity. The present study investigated the prevalence, clinical presentation, and treatment outcomes of the most common hoof lesions – digital dermatitis (Mortellaro’s disease), Rusterholz ulcers, purulent pododermatitis, and interdigital dermatitis – across multiple dairy farms in Ukraine. Clinical examinations and therapeutic procedures were performed on more than 9,800 cows from 7 farms during 2022–2023. Diagnosis was conducted during scheduled functional hoof trimming using an orthopedic crush and was confirmed based on lesion morphology, presence of exudate, odor, and pain response. A locally formulated topical powder composed of copper sulfate, zinc oxide, iodoform, and potassium permanganate was applied to purulent –necrotic lesions and compared with a control treatment using a commercial chemi-spray. Therapeutic efficacy was evaluated by lesion healing dynamics and locomotion scores (AHDB system) on days 3, 14, 21, and 45. Digital dermatitis was identified as the predominant lesion, accounting for 50–66% of all diagnosed hoof disorders. The locally formulated powder showed markedly superior therapeutic performance relative to the chemi-spray, accelerating tissue repair and improving locomotion, with full recovery achieved in 86.7–100% of treated cows, depending on farm and lesion type. These findings confirm the persistently high prevalence of hoof diseases in dairy herds and demonstrate the clinical advantage of an affordable, locally prepared treatment formulation. Routine functional trimming, early lesion detection, and evidence-based local therapy remain critical components of effective lameness management in modern dairy production systems
In vitro tests of effect of disinfectants on the viability of Heterakis gallinarum nematode eggs during embryogenesis
(2024) Євстаф’єва, Валентина Олександрівна; Yevstafieva, V. O.; Омельченко, Ольга Вікторівна; Omelchenko O. V.; Мельничук, Віталій Васильович; Melnychuk, V. V.; Дмитренко, Надія Іванівна; Dmytrenko, N. I.; Крикунова, Валентина Юхимівна; Krykunova, V. E.; Передера, Олена Олександрівна; Peredera, O. O.; Тагільцева, Яніна Михайлівна; Tahiltseva, Y. М.
Affecting the transmission of an infection, objects of the external environment become contaminated with pathogens as a result of their massive release by the definitive host during exogenous stages of parasites’ development, which is an important chain of their epizootic process. Therefore, disinfestation plays an important role in the complex of measures for the prevention and control of poultry helminthiases, including Heterakis gallinarum infection of chickens. The purpose of the research was to investigate in laboratory conditions the ovicidal efficiency of modern disinfectants in relation to the viability of developing eggs of H. gallinarum isolated from infested chickens. "Hermecid-VS" (didecyldimethylammonium chloride, glutaraldehyde, benzalkonium chloride) and "Arquadez-plus" (dimethyldialkylammonium chloride, didecyldimethylammonium chloride, tetrasodium salt) disinfectants were tested. These preparations had a high level of ovicidal efficiency against the eggs of Heterakis, "Hermecid-VS" in 0.25% and 0.5% concentration for exposures of 10–60min (93.5–100.0%), "Arquadez-plus" in 1.0% concentration for exposure of 60 min (93.1%), and at 1.5% (96.8–100.0%) and 2.0% (100.0%) concentrations regardless of exposure. The ovicidal effect of disinfectants was characterized by morphological changes in the nematode eggs when using "Hermecid-VS" – accumulation of air bubbles under the shell, thinning and deformation of the shell, death and gradual resorption of the embryo, loosened egg shell and terminated embryonic development, deformation and thinning of egg the shell, and death of the embryo at the stage of formation of the larva; under the effect of "Arquadez-plus", a stop in development at the stage of cleaving blastomeres, destruction of the shell, death and evacuation of the embryo from the egg, shrinkage and gradual defragmentation of the embryo, death of the larva and its defragmentation. Under the action of disinfectants, the metric parameters of Heterakis eggs also changed. Under the influence of "Hermecid-VS" at all concentrations, the length of the eggs and the thickness of the shell were larger (by 2.9–5.4% and 26.7–46.7%), and their width was smaller (by 5.5–6.9%). With the effect of "Arquadez-plus", the length of the eggs was greater (by 0.4–2.0%), and the width was smaller (by 0.7–4.9%) only when using 0.1–2.0% concentrations of the agent. Heterakis egg shell thickness increased under the influence of "Arquadez-plus" in concentrations of 0.25–2.0% (by 33.3–40.0%). The conducted studies allow us to recommend "Hermecid-VS" and "Arquadez-plus" disinfectants in specified concentrations and modes of their use for maintaining epizootic well-being in the complex of measures against Heterakisinfection of chickesn
Incidence of Candidatus Piscichlamydia salmonis and Candidatus Clavochlamydia salmonicola in the farmed Brown Trout(Salmo trutta) in Ukraine)
(2021-06) Kone, M. S.; Коне, Мохамед Сумана
Influence of Tempetature on Viability and Deveplopment of Heterakis gallinarum (Nematoda, Heterakidae) Eggs. Zoodiversity
(2024) Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна; Омельченко, Ольга Вікторівна; Omelchenko O. V.; Мельничук, Віталій Васильович; Melnychuk, V. V.; Нагорна, Людмила Володимирівна; Nagorna, L. V.; Петренко, Максим Олександрович; Petrenko, M. O.; Шаферівський, Богдан Сергійович; Shaferivskyi, B. S.; Кравченко, Сергій Олександрович; Kravchenko, S. O.; Супруненко, Костянтин Володимирович; Suprunenko, K. V.; Шейко, Сергій Володимирович; Sheiko, S. V.; Каришева, Людмила Павлівна; Karysheva, L. P.; Бурда, Тетяна Леонідівна;; Burda, T. L.; Сизоненко, Наталія Миколаївна; Syzonenko, N. M.; Савенкова, Олена Олександрівна; Savenkova, O. O.; Люлька, Вікторія Миколаївна; Liulka, V. M.
Pinworms of the genus Heterakis Dujardin, 1845 parasitize a wide range of hosts, including a number of species of domestic and wild birds. Th ese nematodes are ecologically adapted to the climatic conditions of many geographical zones, which contributes to their widespread distribution. Th e aim of the work was to investigate the infl uence of diff erent temperature regimes at laboratory conditions on the growth, development and viability of eggs isolated from the gonads of female nematodes Heterakis gallinarum Schrank, 1788. Th e conducted studies established that, depending on the cultivation temperature, nematode eggs developed from 6 to 56 days, and their survival rate was from 67.7 to 83.7 %. Th e temperature of 25 °С was the most favourable for the development of H. gallinarum eggs, the development lasted 12 days and the highest number of eggs with motile infective larvae was formed (83.7 %). It was found that the period of egg development in cultures gradually decreased with increasing temperature: it was 56 days at 15 °C, 18 days at 20 °C, 12 days at 25 °C and 6 days at 30 °C. Th e survival rate of H. gallinarum eggs gradually increased with increasing temperature in regimes of 15 °С, 20 °С and 25 °С to 67.7 %, 80.7 % and 83.7 %, respectively. At a temperature of 30 °C, egg survival decreased slightly to 78.7 %. It was found that the development of H. gallinarum eggs from the zygote stage to the formation of motile infective larvae, depending on the temperature regime of cultivation, is accompanied by a decrease in egg length by 4.9–5.4 %, an increase in egg width by 4.1–7.6 % and a thinning of the shell by 9.5–28.6 %. Under diff erent temperature regimes, the morphometric parameters of eggs during their development diff er in terms of their length, width and shell thickness
Inhibitory properties of disinfectants on the sporogony of Eimeria tenella (Protista, Eimeriidae)
(2025) Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна; Melnychuk, V. V.; Мельничук, Віталій Васильович; Hodyna, V.; Mykhailiutenko, S. M.; Михайлютенко, Світлана Миколаївна; Kruchynenko, O. V.; Кручиненко, Олег Вікторович; Omelchenko, A.; Avramenko, N. О.; Авраменко, Наталія Олексіївна; Mazannyi, O.
he protozoa of kingdom Protista are widespread pathogens of gastrointestinal protozoal diseases in chickens and cause significant economic losses to farms. Prevention includes a set of measures to treat poultry with effective drugs, and disinfect the environmental objects using modern, safe and beneficial means. For this purpose, it is recommended to use disinfectants that have been tested for their disinfestation effect. The aim of the research was to investigate the disinfestation effect of chemicals on the process of sporulation of Eimeria tenella oocysts isolated from chickens in laboratory conditions. It was found that the disinfectants "Virosan" (active substances – alkyldimethylbenzylammonium chloride and glutaraldehyde) and "Yoderin" (contains iodophores) had disinvasive properties, but their indicators of inhibitory action against sporogony of E. tenella oocysts were not the same. The most effective was the agent alkyldimethylbenzylammonium chloride and glutaraldehyde mixture, with a 100% inhibitory effect when used at a 0.5% concentration and exposure of 150 minutes. At lower exposures and concentrations, its indicators of inhibitory action ranged within the following limits: at 0.1% concentration to 57.0%, at 0.25% concentration to 84.5%. The inhibitory effect of the iodophor-based disinfectant was lower and varied depending on the exposure (from 30 to 150 min) within the following limits: at 0.5% concentration to 35.7%, at 1.0% concentration to 68.2%, at 2.0% concentration to 93.1%. In addition to stopping the development of Eimeria oocysts, the disinfectants induced changes in their morphological and metric indicators. Metric indicators of oocysts under the action of disinfectants were characterized by lower values of their width (by 4.8–8.7%), and under the action of the iodophor-based agent, by a decrease in the ratio of length / width of oocysts (by 11.0%). The obtained results of the inhibitory action of the disinfectants present prove the possibility of using these agents to combat and prevent eimeriasis in chickens
Morpho-anatomical traits of Cysticercus pisiformis in European rabbits (Oryctolagus cuniculus)
(2024) Mykhailiutenko, S. M.; Kruchynenko, O. V; Kuzmenko, L.; Klymenko, O.; Dmytrenko, N.; Михайлютенко, Світлана Миколаївна; Кручиненко, Олег Вікторович
The study was conducted in the laboratory of the Department of Parasitology and Veterinary-Sanitary Examination of the Poltava State Agrarian University. In total, 154 slaughtered rabbits of the Grey Giant breed aged 34 months, reared at private farms of the Poltava region (Ukraine) were examined. The aim of the research was to establish differential morphological and metrical features of metacestodes isolated from domestic rabbits. Only one species, Cysticercus pisiformis was recorded; invasion rate was 17.53%. White-grey bubbles were found on the serous membranes of the abdominal and, less often, thoracic cavities. The ultrastructural characteristics of the main parts of the scolex, such as suckers, rostellum and hooks are given. The morphometric characteristics of metacestodes collected from male and female rabbits were slightly different. The study of chitinoid hooks had the greatest diagnostic value. A statistically significant variation was noted for large and small hooks. Thus, the average size of large and small hooks was likely to be smaller by 1.33 and 3.37%, respectively in samples obtained from female rabbits. The metacestodes isolated from female rabbits were larger than those obtained from male rabbits regarding length of the handle of the large (114.28 μm vs. 105.26 μm) and small hooks (43.06 μm vs. 39.3 μm, respectively)
Mykola Hamaliya, an outstanding microbiologist and epidemiologist (to the 160th anniversary of the birthday).
(2020) Тітаренко, Олена Вікторівна

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