Received: 22 November 2019
Accepted: 29 May 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: This study did not require official or institutional ethical approval. The animals were handled according to high ethical standards and national legislation. Faecal material was collected in the farms of routine deworming. Therefore, the study did not require the consent of an ethics committee.
: The stud farm owners consented to collecting faecal samples from horses by a veterinarian, transferring them to the Department of Parasitology and Invasive Diseases University of Life Sciences in Lublin and using the results obtained for scientific research.
: The authors declare that they have no competing interests.