Associations between fasciolosis and milk production, and the impact of anthelmintic treatment in dairy herds

Köstenberger, Kerstin; Tichy, Alexander; Bauer, K. H.; Pless, P.; Wittek, Thomas

doi:10.1007/s00436-017-5481-3

Cited by 34 publications

(24 citation statements)

References 23 publications

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“…All tests detected changes in antibody levels 90 days post-treatment and Bio-X showed greater accuracy in this detection as all changes after treatment were significant. However, a larger sample population and/or longer sampling time would be necessary to confirm the findings using the Svanovir kit as observed by Köstenberger et al in 2017 [50] and Charlier et al in 2012 [49]. The use of all four tests with BTM samples showed to be a reliable tool for the determination of high and low exposure seasons and in-herd prevalence throughout the year, however, results must be interpreted considering herd health management, Fasciola hepatica life cycle and herd milking pattern.…”

Section: Discussionmentioning

confidence: 80%

“…In general, the naturally infected-beef population presented decreases of ELISA values 90 days after the application of treatment. The Svanovir kit has previously shown a significant decrease of ODRs at 3–6 months [49] and 1 year [50] post treatment. These previous reports and the present results propose the use of the Svanovir kit more than 90 days after treatment.…”

Section: Discussionmentioning

confidence: 99%

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Comparison of four commercially available ELISA kits for diagnosis of Fasciola hepatica in Irish cattle

et al. 2019

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BackgroundFasciola hepatica is a liver parasite of mammals and it results in poor welfare outcomes and economic losses in ruminants. While faecal egg count is the test most commonly used for diagnosis, it does not indicate presence of migrating immature stages. Serological techniques increase sensitivity at all stages of the liver fluke infection. The aim of this study was to compare four commercially available ELISA tests for the diagnosis of F. hepatica. For this purpose, we tested three sample types; (i) known F. hepatica status sera from an experimental infection for the comparison of sensitivities and specificities, (ii) sera from pre- and post-flukicide-treated (albendazole, closantel, nitroxynil and triclabendazole) beef cattle to contrast the differences of seropositivity before and after treatment, and (iii) bulk tank milk samples from dairy herds sampled during high and low F. hepatica exposure periods for assessing seasonal variations with the four tests available. Samples were tested using ELISA kits supplied by four manufacturers (Ildana Biotech, IDEXX, Svanova, and Bio-X). Samples were analysed simultaneously and in duplicate.ResultsIn the control population Ildana, IDEXX and Bio-X presented 100% sensitivity (Se) and specificity (Sp), Svanovir presented a Se of 59% and a Sp of 96%. In flukicide-treated beef cattle, kits highlighted decreasing antibody levels 90 days post-treatment in variable degrees. Finally, bulk milk showed a significant decrease in ELISA value between high and low fluke exposure periods with all tests studied.ConclusionsSe and Sp found in the present study, confirm that Ildana, IDEXX and Bio-X are accurate for the detection of F. hepatica exposure in Irish cattle. Svanovir Se and Sp in this population, indicate that a larger study is necessary to confirm this test characteristic in Irish herds. In post-treatment use, Bio-X showed a consistent and significant decrease of ELISA value in all groups treated, denoting to be a reliable tool for assessing treatment effect at 90 days post-treatment. Finally, all tests showed to be a reliable tool for the F. hepatica monitoring of high and low exposure seasons, using bulk tank milk samples.

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Comparison of four commercially available ELISA kits for diagnosis of Fasciola hepatica in Irish cattle

et al. 2019

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“…Thus, management of domestic animals (including range restrictions) can be a confounding factor for the estimation of the actual transmission risk between these hosts. By contrast, wild ruminants are free-ranging and may graze large geographic areas including domestic animals’ pastures where it is frequently observed ( 40 ).…”

Section: Discussionmentioning

confidence: 99%

Transmission of Helminths between Species of Ruminants in Austria Appears More Likely to Occur than Generally Assumed

2018

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Helminth infections of the gastrointestinal tract and lungs can lead to devastating economical losses to the pastoral based animal production. Farm animals can suffer from malnutrition, tissue damage, and blood loss resulting in impaired production traits and reproduction parameters. In Austria, pastures grazed by sheep, goats, and cattle overlap with the habitats of several species of wild cervids (roe deer, red deer, sika deer, and fallow deer) and bovids (mouflon, chamois, and ibex), and transmission of parasites between different ruminant species seems likely. A complete and updated overview on the occurrence of helminths of domestic and wild ruminants in Austria is presented. Based on these data, intersections of the host spectrum of the determined parasites were depicted. The “liability index” was applied to identify the ruminant species, which most likely transmit parasites between each other. A degree for host specificity was calculated for each parasite species based on the average taxonomic distance of their host species. Of the 73 identified helminth species 42 were identified as generalists, and 14 transmission experiments supported the assumed broad host specificity for 14 generalists and 1 specialist helminth species. Overall, 61 helminths were found to infect more than one host species, and 4 were found in all 10 ruminant species investigated. From these analyses, it can be concluded that a number of helminth parasites of the gastrointestinal tract and the lungs are potentially transmitted between domestic and wild ruminants in Austria. For some parasites and host species, experimental evidence is in support for possible transmission, while for other such studies are lacking. Host preference of different genotypes of the same parasite species may have a confounding effect on the evaluation of cross-transmission, but so far this has not been evaluated systematically in helminths in Austria. Further studies focusing on experimental cross-transmission and genetic characterization are needed to define the potential consequences for the epidemiology of those parasites, animal welfare, and economic impact.

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“…On the other hand, in the recent Swiss study [ 17 ], where most of herds were similarly small, herd size proved to increase the risk of exposure to O. ostertagi , which indicates that the role of herd size in the epidemiology of O. ostertagi is unclear and any conclusion should be drawn very cautiously. Contrary to some previous studies [ 11 , 17 ] we did not include milk yield in our risk analysis as reduced milk yield is a consequence of more intensive exposure to the parasites [ 2 , 37 , 45 ] rather than a factor affecting the exposure. The only thing not mentioned before is the fact that using hay or haylage as main roughage increases risk of exposure to F. hepatica , when compared to corn silage, even when no pasture or fresh grass is available.…”

Section: Discussionmentioning

confidence: 99%

Herd-level seroprevalence of Fasciola hepatica and Ostertagia ostertagi infection in dairy cattle population in the central and northeastern Poland

Kowalczyk¹,

Czopowicz²,

Weber³

et al. 2018

BMC Vet Res

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BackgroundFasciola hepatica and Ostertagia ostertagi infections are widespread in cattle population of Europe, however data on their prevalence in Poland are only fragmentary. Therefore, the cross-sectional study was carried out to determine the herd-level seroprevalence of F. hepatica and O. ostertagi infection in dairy cattle population in the central and north-eastern provinces Poland, and to identify basic local risk factors for these infections. In total, 598 herds were enrolled, 394 (65.9%) in the north-eastern province and 204 (34.1%) in the central province. In each herd the questionnaire survey was conducted and bulk-tank milk (BTM) sample was collected and screened using two indirect immunoenzymatic tests. Optical density ratio (ODR) was regarded as the quantitative proxy of exposure to either of the two parasites.ResultsBoth Fasciola and Ostertagia ELISA ODR in the north-eastern province was significantly higher than ODR in the central province. At the cut-off value of ODR = 0.27 the true herd-level seroprevalence of F. hepatica was 79.6% (95% CI: 74.0%, 84.3%) in the north-eastern province and 13.0% (95% CI: 5.3%, 21.7%) in the central province. At the cut-off of ODR = 0.50151 of 188 herds (80.3%, 95% CI: 74.1%, 85.4%) were seropositive for O. ostertagi in the north-eastern province and only 70 of 136 herds (51.5%, 95% CI: 43.1%, 59.7%) were seropositive in the central province. Location of a herd in the north-eastern province, longer grazing period practiced in a herd and > 50%-share of grazing grass in roughage were all positively related to the increase in exposure to both parasites. Moreover, the use of hay or haylage as main roughage proved to be positively related to the increase in exposure to F. hepatica.ConclusionsF. hepatica and O. ostertagi are widespread in cattle population in Poland, however their occurrence at a herd-level varies between different regions of Poland. This diversity can only partly be explained by different herd management, and appears linked to environmental and climate conditions typical for these regions.Electronic supplementary materialThe online version of this article (10.1186/s12917-018-1455-7) contains supplementary material, which is available to authorized users.

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Associations between fasciolosis and milk production, and the impact of anthelmintic treatment in dairy herds

Cited by 34 publications

References 23 publications

Comparison of four commercially available ELISA kits for diagnosis of Fasciola hepatica in Irish cattle

Comparison of four commercially available ELISA kits for diagnosis of Fasciola hepatica in Irish cattle

Transmission of Helminths between Species of Ruminants in Austria Appears More Likely to Occur than Generally Assumed

Herd-level seroprevalence of Fasciola hepatica and Ostertagia ostertagi infection in dairy cattle population in the central and northeastern Poland

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