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Treatment against helminths in Norwegian sheep: a questionnaire-based survey

Gravdal, Maiken and Robertson, Lucy J. and Tysnes, Kristoffer R. and Höglund, Johan and Chartier, Christophe and Stuen, Snorre (2021). Treatment against helminths in Norwegian sheep: a questionnaire-based survey. Parasite. 28 , 63
[Research article]

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Abstract

A questionnaire was distributed to 5487 farmers throughout Norway in order to obtain information about management practices regarding helminth infections in sheep. In addition, the farmers' perceptions of helminths and anthelmintic efficacy were investigated. Most farmers (80%) treated prophylactically against nematodes, and 24% also used prophylactic treatment against Fasciola hepatica. Overall, few farmers (11%) used parasitological analysis as a tool to assess the timing of treatment, but rather based it on other factors such as previous experience (70%). In the surveyed sheep flocks, the use of benzimidazoles was reduced from 2018 (52%) to 2019 (47%) (p < 0.01), whereas the use of macrocyclic lactones increased from 2017 (23%) to 2019 (36%) (p < 0.001). Poor anthelmintic efficacy was suspected by 10% of the farmers, and 11% reported that helminths were an increasing problem in their flocks. The majority of farmers (72%) considered their veterinarian as the most important advisor for treatment of parasites, but reported a high level of uncertainty regarding which parasites were present in their flocks, with unknown status most frequently reported for Haemonchus contortus (71.5%). This is probably related to the fact that very few farmers (15%) regularly test their animals for parasites. The present study provides up-to-date information on treatment practices for helminths in Norwegian sheep flocks.

Authors/Creators:Gravdal, Maiken and Robertson, Lucy J. and Tysnes, Kristoffer R. and Höglund, Johan and Chartier, Christophe and Stuen, Snorre
Title:Treatment against helminths in Norwegian sheep: a questionnaire-based survey
Series Name/Journal:Parasite
Year of publishing :2021
Volume:28
Article number:63
Number of Pages:10
Publisher:EDP SCIENCES S A
ISSN:1252-607X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
Keywords:Anthelmintic resistance, Sheep, Questionnaire survey, Parasite control, Liver fluke, Gastrointestinal nematodes
URN:NBN:urn:nbn:se:slu:epsilon-p-113592
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113592
Additional ID:
Type of IDID
DOI10.1051/parasite/2021061
Web of Science (WoS)000691922500002
ID Code:25366
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Department of Biomedical Science and Veterinary Public Health
Deposited By: SLUpub Connector
Deposited On:16 Sep 2021 14:25
Metadata Last Modified:16 Sep 2021 14:31

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