Trichostrongylus and Haemonchus anthelmintic resistance in naturally infected sheep from southern Brazil

9Citations
Citations of this article
22Readers
Mendeley users who have this article in their library.

Abstract

The anthelmintic resistance in small ruminants is a common problem and concern worldwide. The aim of this study was to verify anthelmintic treatment efficacy in naturally infected sheep. This study was conducted on nine herds that used the same anthelmintic management for over a year. In each farm, the animals were divided into two groups: untreated control group (n = 5) and treated (n = 10) according to the number of eggs per gram of feces (EPG). The treatment effect was checked based on EPG results and larval culture performed before treatment and 10 days after treatment. Significant differences were not observed (P > 0.05) on EPG results between untreated and treated groups. The coproculture showed that the animals were infected primarily by Haemonchus spp., Trichostrongylus spp., Teladorsagia spp., Cooperia spp. and Oesophagostomum spp. In all farms, anthelmintic resistance by genera Haemonchus and Trichostrongylus was found, but this resistance varied greatly between farms. Haemonchus spp. showed resistance to closantel, levamisole, and albendazole. Trichostrongylus spp. was shown to be resistant to closantel, levamisole, and albendazole. The drugs tested showed to be efficient against the genera Teladorsagia, Cooperia, and Oesophagostomum. Based on these results, we conclude that the anthelmintic resistance to the tested drugs is a problem present in the farms evaluated.

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Klauck, V., Pazinato, R., Lopes, L. S., Cucco, D. C., De Lima, H. L., Volpato, A., … Da Silva, A. S. (2014). Trichostrongylus and Haemonchus anthelmintic resistance in naturally infected sheep from southern Brazil. Anais Da Academia Brasileira de Ciencias, 86(2), 777–784. https://doi.org/10.1590/0001-3765201420130061

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 12

75%

Lecturer / Post doc 2

13%

Professor / Associate Prof. 1

6%

Researcher 1

6%

Readers' Discipline

Tooltip

Agricultural and Biological Sciences 7

47%

Veterinary Science and Veterinary Medic... 5

33%

Medicine and Dentistry 2

13%

Economics, Econometrics and Finance 1

7%

Save time finding and organizing research with Mendeley

Sign up for free