Toxocara Canis – Bioindicator of Parasitic Soil Contamination of Technogenically Transformed Territories

Stets, Galyna; Voloshyna, Natalia

doi:10.15550/asj.2016.03.041

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…It is known that the best conditions for the development of embryonic and post-embryonic forms of development of nematodes to the invasive stage are the superficial layers of the soil, litter, the floor, where the pathogen comes from the faeces during the act of defecation. The abovementioned is confirmed by the numerous studies of scientists who prove that the soil is one of the objects of the environment most vulnerable to contamination with invasive elements, including eggs of capillaries of the species Aonchotheca bovis (Capillaria bovis) López-Neyra, 1947(Roeber et al, 2013Stets and Voloshyna, 2016).…”

Section: Introductionmentioning

confidence: 81%

Disinvasive efficacy of chlorine-based preparations of domestic production for eggs of nematodes of the species Aonchotheca bovis parasitizing in sheep

Мельничук

Yuskiv

2018

Ukr. Jour. of Vet. and Agr. Sci.

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The paper presents the results of experimental researches on the determination of the disinvasion efficiency of chlorinated chemical preparations of domestic production of “Brovades-plus”, “Bi-dez” and “Dezsans” of NPF “Brovafarma” (Ukraine). The conducted researches on the basis of the parasitology laboratory found that the studied disinfectants possess disinvasive properties in respect of non-invasive test culture of eggs of nematodes of the species Aonchotheca bovis (son Capillaria bovis) López-Neyra, 1947, isolated from gonads of females of worms. The dissimilar stability of eggs of capillaries to the effect of the tested agents in vitro is proved. The most effective disinfectant in the case of eggs of capillaries of the species A. bovis was the preparation “Dezsan”. The high level of its disinvasive efficacy (DE – 91.14–100.0%) was registered at the application of the preparation in 1.0–2.0% of the exposure concentration for 10–60 minutes. The chemicals “Bi-dez” and “Brovadez-plus” proved to be less effective in the relatively non-invasive test culture of A. bovis eggs. The high level of efficiency (DE –92.41–100.00%) of the “Bi-dez” was achieved with its use at concentrations of 1.5% (exposure of 30 and 60 min) and 2.0% (exposure of 10–60 minutes) The “Brovadez plus” preparation in vitro proved to be the least effective means of non-invasive test culture of nematode eggs of the species A. bovis, since a high level of disinvasive efficacy (DE – 100.00%) was achieved only with the use of 2.0% solution per exposure 10–60 min. It was established that the experimentally tested chlorine-based means of domestic production resulted in the death of eggs in the culture in due to the destructive effect of the components of the preparations on the shell, the caps of eggs of the capillaries, as well as on the germ in the middle of the egg. In experimental cultures treated with the means, the destruction of the shell of the egg in the location of the caps, the exit of morulae outside, the cessation of development or shrinkage of the embryo and deformation of the egg shell were recorded.

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Section: Introductionmentioning

confidence: 81%

Disinvasive efficacy of chlorine-based preparations of domestic production for eggs of nematodes of the species Aonchotheca bovis parasitizing in sheep

Мельничук

Yuskiv

2018

Ukr. Jour. of Vet. and Agr. Sci.

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“…Відомо, що оптимальні умови для розвитку ембріональних та постембріональних форм розвитку нематод до інвазійної стадії мають поверхневі шари ґрунту, підлога та підстилка, куди збудник потрапляє із фекаліями під час дефекації тварин (Gaasenbeek & Borgsteede, 1998). У свою чергу, відсутність профілактичних заходів, низький рівень санітарної культури та кліматичні умови з переважаннями високих температур і відносно високою вологістю сприяють значному поширенню інвазій (Roeber et al, 2013;Stets & Voloshyna, 2016). У зв'язку із цим вивчення поширення нематодозів травного каналу овець у різних кліматичних регіонах України має наукове і практичне значення.…”

Section: вступunclassified

Epizootic situation of sheep digestive canal nematodoses in the conditions of the Central and South-Eastern regions of Ukraine

Мельничук¹

2019

TAVM

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Sheep farming is a universal industry that supplies mutton, by-products, milk and wool, ranks third place in the world by statistical indicators and belongs to the economically sound livestock industries. However, along with the significant benefits, the industry has risks connected with a large number of diseases of parasitic etiology, among which one the relevant place belongs to diseases, caused by the nematodoses of the digestive canal. The epizootic situation concerning the nematodoses of the digestive canal was studied in the farms of the Central and SouthEastern regions of Ukraine (Zaporizhia, Kyiv and Poltava regions) during 2015-2019. Coprovascopic investigations were performed on sheep of different breeds and age groups using the McMaster quantitative method, determining the magnitude and intensity indicators of the invasion. The investigations have shown a significant spread of nematodes of the gastrointestinal tract of sheep in the Central and SouthEastern regions of Ukraine. The average invasion extensiveness was 45.92 % for intensity from 50 to 2350 eggs/g of fecal. As a result of the conducted coprological investigations, the parasitism of nematodes of the series Strongylida (Railliet et Henry, 1913), Trichurida (Skrjabin et Schulz, 1928; Spassky, 1954), Rhabditida (Chitwood, 1933), were registered on the morphological characteristics of eggs isolated from fecal of diseased sheep. In percentage terms, the strongilatosic invasion was the most widespread in the territory of the investigated region and reached 44.08 % of the total number of sheep with nematodoses deseases of the digestive canal. Accordingly, the trichuriasic and strongyloidosic infestations of sheep were recorded slightly less, with a share of 31.32 % and 24.60 %, respectively. In the cross-section of the investigated regions, it was fixed that the greatest quantity of the sheep ill of the digestive canal nematodoses were detected in the sheep farms of Poltava region (EI = 54.27 %). The animal farmings of Kyiv (EI = 48.79 %) and Zaporizhia (EI = 38.21%) regions were more fortunate. The conducted investigations for the first time in Ukraine have elucidated the present epizootic condition with regard to nematodoses of the digestive canal of sheep. The prospect of further investigations is to study the fauna of the nematodes of the sheep alimentary canal of the territory of the Central and SouthEastern regions of Ukraine by the consequences of complete helminthological autopsy of the digestive tract organs.

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“…Паразитарне забруднення об'єктів довкілля яйцями гельмінтів нині залишається важливим питанням для фахівців різних галузей, у тому числі й лікарів ветеринарної медицини, що потребує додаткового вивчення (Roeber et al, 2013;Stets & Voloshyna, 2016). Загальновідомо, що до найбільш контамінованих інвазійними елементами об'єктів довкілля належить ґрунт, особливо його поверхневі шари.…”

Section: вступunclassified

Industrial tests of different methods of soil samples testing for the presence of eggs of nematodes – pathogens of parasitic diseases of sheep

Мельничук

Yuskiv

2019

SMLNUVMB

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Under current conditions, livestock farming, where a large number of animals are kept in restricted areas, creates all the prerequisites for intensive parasitic contamination of the environment. The objects of the environment, including the soil, are an important link in the development of pathogens of parasitic diseases. Out of all objects, soil plays a major role in the emergence of invasive diseases, since it is the main factor in the transmission of diseases. In this regard, the issue of studying contamination of soil with invasive elements remains relevant. Knowledge of the level of soil contamination with invasive elements enables to develop strategies for conducting economic activity taking into account its actual pollution and to plan well-grounded measures to overcome invasive diseases. However, it remains important to choose an effective research method, which today has a large number. In this regard, the purpose of our research was to find out the sensitivity of the methods of soil study on nematode eggs, in particular regarding the digestive system strontium, and the species Trichuris sp., S. papillosus, S. ovis and A. bovis. The obtained data indicate that the use of well-known (Romanenko-Hudzhabidze, Dolbin et al.) and advanced methods of sanitary-parasitological research proved to be suitable for the establishment of soil contamination by eggs of nematodes. However, the most effective method was the improved method, as it allows to detect the greatest number of nematode eggs in the samples under investigation (by 30.41 and 68.21%, respectively). In addition, the proposed method is more effective than the number of eggs per kg of soil (30.41 and 64.68%, respectively,. The high efficiency of the new method is also confirmed by the indicators of the ommogram, according to which it allows to find in the samples of soil eggs the strontium of the digestive organs, in particular Nematodirus sp., as well as nematodes of species Trichuris sp., S. papillosus, S. ovis, A. bovis. Their number was higher than Dolbin et al. and Romanenko-Gudzhabidze. Thus, the data obtained have an important theoretical and practical significance, since they allow a wellgrounded choice of the method of soil study to establish its contamination with nematode eggs, taking into account the effectiveness of a particular species of the parasite.

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Toxocara Canis – Bioindicator of Parasitic Soil Contamination of Technogenically Transformed Territories

Cited by 5 publications

References 2 publications

Disinvasive efficacy of chlorine-based preparations of domestic production for eggs of nematodes of the species Aonchotheca bovis parasitizing in sheep

Disinvasive efficacy of chlorine-based preparations of domestic production for eggs of nematodes of the species Aonchotheca bovis parasitizing in sheep

Epizootic situation of sheep digestive canal nematodoses in the conditions of the Central and South-Eastern regions of Ukraine

Industrial tests of different methods of soil samples testing for the presence of eggs of nematodes – pathogens of parasitic diseases of sheep

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