A survey of experiences of UK cattle and sheep farmers with anthelmintic prescribers; Are best practice principles being deployed at farm level?

Easton, Stephanie; Pinchbeck, Gina; Bartley, David J.; Hodgkinson, Jane E.; Matthews, Jacqueline B.

doi:10.1016/j.prevetmed.2018.04.009

Cited by 15 publications

(18 citation statements)

References 29 publications

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“…In Europe, a small number of parasite management surveys identified several knowledge gaps where F. hepatica control could be optimized on dairy farms (15)(16)(17). Bloemhoff et al (15) found that 3% of dairy farmers treating for F. hepatica used a product unsuitable for the purpose, and grazing management options were not effectively utilized on-farm.…”

Section: Introductionmentioning

confidence: 99%

Fasciola hepatica Control Practices on a Sample of Dairy Farms in Victoria, Australia

et al. 2021

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In Australia, little is known about the strategies used by farmers to control Fasciola hepatica (F. hepatica) infection in dairy cattle. Triclabendazole-resistant F. hepatica have recently been found on several dairy and beef properties in Australia. It is difficult to draw conclusions about how widespread resistance is in Australian dairy cattle because we have little information about flukicide usage, drug resistance testing, and alternative flukicide usage on-farm. The study objectives were to determine how dairy farmers are currently controlling F. hepatica and to identify knowledge gaps where F. hepatica control strategies need to be communicated to farmers to improve management. The survey was distributed online or by hard copy and 36 dairy farmers completed the survey. There were 34 questions including closed, open-ended, multicheck box, demographic, and text questions. Descriptive statistics were used to quantify each response. The survey results showed high use of clorsulon, limited rotation of flukicides, and limited use of diagnostic tests to inform treatment options and timing. There was poor adherence to best management practice in determining the dose of flukicides administered to cattle, with farmers often relying on estimating body weights or average body weights, suggesting that underdosing of animals is likely to be prevalent. Most respondents in this study did not isolate and quarantine treated and newly returned or purchased animals before joining them with the main herd. The research identified four knowledge gaps where communication needs to be enhanced to improve control of F. hepatica: diagnostic testing to inform flukicide use, rotation of flukicide actives, flukicide administration, and increased testing of replacement animals.

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Section: Introductionmentioning

confidence: 99%

Fasciola hepatica Control Practices on a Sample of Dairy Farms in Victoria, Australia

et al. 2021

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“…There are indications that some actions are able to slow down the development and spread of AR, e.g. promote "best practice" parasite management programmes based on sustainable use of anthelmintics through targeted treatment (TT) and targeted selective treatment (TST) based on easy-to-use diagnostics to inform treatment decisions [7,9].…”

Section: Introductionmentioning

confidence: 99%

The threat of reduced efficacy of anthelmintics against gastrointestinal nematodes in sheep from an area considered anthelmintic resistance-free

et al. 2020

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Background The worldwide increased difficulty to combat gastrointestinal nematode (GIN) infection in sheep, due to progressing anthelmintic resistance (AR), calls for an enhanced and standardized implementation of early detection of AR. This study provides a snapshot of the current AR status against benzimidazoles and macrocyclic lactones in southern Italy, generated with standardized techniques. Methods On 10 sheep farms, the efficacy of albendazole (ALB) and either eprinomectin (EPR) or ivermectin (IVM) was evaluated based on the faecal egg count reduction test (FECRT) performed with the Mini-FLOTAC. For each tested drug, 40 sheep were rectally sampled at D0 and sampled again 14 days after the treatment (D14). The FECRT was calculated from individual samples and pooled samples which consist of 5 individual samples. Efficacy was classified as ‘reduced, ‘suspected’ and ‘normal’. Coprocultures were set for D0 and D14 faecal samples of each group. From farms with FECR < 95%, an in vitro egg hatch test (EHT) and a follow-up FECRT using fenbendazole (FBZ) were conducted. Results Based on the FECR, high efficacy (from 95.7% to 100%) was observed for ALB and IVM in eight farms (Farms 3–10). On Farm 1 and Farm 2, the efficacy for the macrocyclic lactones was classified as ‘normal’, but ‘reduced’ efficacy was observed for ALB on Farm 1 (FECR = 75%) and ‘suspected’ efficacy on Farm 2 (FECR = 93.3%) with the predominant GIN genus Trichostrongylus followed by Haemonchus at D14. The FEC results of pooled samples strongly correlated with those of individual samples, for FEC at D0 (rs = 0.984; P < 0.0001) and at D14 (rs = 0.913; P < 0.0001). The classifications of efficacy in Farm 1 (FECR = 86.0%) and Farm 2 (FECR = 93.0%) in the follow-up FECRT with FBZ coincide with the main FECRT trial. The in vitro EHT confirmed AR in both farms (Farm 1: 89%; Farm 2: 74%). Conclusions In regions like southern Italy, where the negative impacts from AR have played a minor role, efficient monitoring of AR is important in order to evaluate potential risks and being able to promptly respond with countermeasures.

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“…Control has traditionally been achieved through the frequent application of broad spectrum anthelmintics; however, this has led to the emergence and spread of resistance. Maintaining production and economic viability in the face of resistance is an increasing challenge (Easton et al, 2018). The trend towards nonchemical parasite control methods (ecological, organic, green) farming of livestock.…”

Section: Introductionmentioning

confidence: 99%

“…Global food security and an increasing demand to produce more animal protein, due to growing human populations, will require the production of more food with more efficient land use, and reduced waste (Learmount et al, 2015). Gastrointestinal helminthes cause considerable production loss in livestock all over the world (Easton et al, 2018). Healthy adult ewes are mostly immune to infection with gastrointestinal parasites and as a result there is rarely a requirement for treatment with anthelmintic drugs.…”

Section: Introductionmentioning

confidence: 99%

Biological Control of Gastrointestinal Helminthes of Livestock

Boylu

Önder

2020

Black Sea Journal of Engineering and Science

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Gastrointestinal helminths cause considerable production loss in ruminants globally and constraint to optimum livestock production. Extensively managed animals often host gastrointestinal parasites. Guidelines for sustainable control of parasites in sheep (SCOPS) have been produced in the UK which include recommendations for treatments to ewes. Traditionally control has been achieved through the application of broad spectrum anthelmintic; however, resistance is the major issue. In terms of parasitic nematodes in sheep, widespread resistance has been identified to the three available broad-spectrum anthelmintic classes with reports of increasing multi-class resistance was reported. Anthelmintic treatments can reach up to eight for lamb finishing. Resistance to anthelmintic can be reached to 88%. The trend towards nonchemical parasite control methods (ecological, organic, green) farming of livestock. Biological control of nematode parasites of livestock is the rising issue of animal science. In this study, biological control of nematode parasites of livestock has been reviewed.

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A survey of experiences of UK cattle and sheep farmers with anthelmintic prescribers; Are best practice principles being deployed at farm level?

Cited by 15 publications

References 29 publications

Fasciola hepatica Control Practices on a Sample of Dairy Farms in Victoria, Australia

Fasciola hepatica Control Practices on a Sample of Dairy Farms in Victoria, Australia

The threat of reduced efficacy of anthelmintics against gastrointestinal nematodes in sheep from an area considered anthelmintic resistance-free

Biological Control of Gastrointestinal Helminthes of Livestock

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