نتایج جستجو برای: ostertagia circumcincta
تعداد نتایج: 393 فیلتر نتایج به سال:
Helminth infections are one of the most prevalent parasitic diseases affecting animals and humans worldwide. Anthelmintic resistance to main drugs used control these in animals, especially ruminants, is a major global problem that needs urgent solutions. The purpose this study was design obtain new benzimidazole (BZ) derivatives evaluate their vitro ovicidal larvicidal activities. Based on prev...
Gastrointestinal nematodes (GIN) infection can impair milk production (MP) in dairy cows. To investigate whether MP would be optimized by spring targeted-selective anthelmintic treatment in grazing cows, we assessed (1) the effect on MP of an anthelmintic treatment applied 1.5 to 2 months after turn-out, and (2) herd and individual indicators associated with the post-treatment MP response. A ra...
The relative contribution of the third (L3), fourth (L4) and adult stages of Ostertagia ostertagi to the development of immunity was assessed in calves which were either continuously infected during 21 weeks or subjected to infections truncated by anthelmintic treatment at the L 3 or L 4 stage. A fourth group remained uninfected (control group). Faecal samples and blood samples were collected w...
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