Ostertagia ostertagi is the most prevalent (>90%) and pathogenic parasitic nematode in cattle in temperate regions. Calves in their first grazing season are the most susceptible to Ostertagia infections, often showing obvious signs of disease such as inappetence, dull hair coat, diarrhoea and weight loss. In second season grazing cattle and adult cows infections are usually subclinical, but can cause reduced growth or milk production. The Laboratory of Parasitology has gained a clear understanding of the infection patterns and the epidemiology of gastrointestinal nematode infections in calves in Western Europe and the preventive measures that are commonly applied to control these parasites. Recently, a project has been started to develop and evaluate diagnostic methods as tools that estimate production losses caused by nematode infections in adult dairy cows.
The main objectives of the present research are:
(1) the evaluation of the (persistent) efficacy of new (formulations of) anthelmintics in cattle, both in natural grazing conditions and in artificial infection experiments;
(2) the evaluation of serum pepsinogen levels as a tool for monitoring preventive anthelmintic strategies
(3) the evaluation of a milk anti-O. ostertagi ELISA as a method to assess morbidity in adult dairy cows.
|Laboratory of Parasitology||member||2009-07-01|
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|Forbes A.B., Vercruysse J., Charlier J., 2008. A survey of the exposure to Ostertagia ostertagi in dairy cow herds in Europe through the measurement of antibodies in milk samples from the bulk tank. Vet Parasitol, in press.||author|
created:2011-12-14 14:18:59 UTC, source:web