Ostertagia ostertagi is one of the most important gastrointestinal nematodes for cattle worldwide. As Ostertagia ostertagi is present on pasture, all grazing cattle in temperate climate regions are exposed to the parasite.
Nematode infestations in adult cows are predominantly subclinical, but may lead to a decrease in milk production. The screening for Ostertagia ostertagi antibodies in cattle milk samples is a promising tool to follow the infestation level, thus becoming an instrument to determine the need for anthelmintic control.
Our Department of Virology, Parasitology and Immunology-Faculty of Veterinary Medicine has developed an O. ostertagi-Ab ELISA to detect Ostertagia ostertagi specific antibodies in milk. The test is commercialised by Svanova. (www.svanova.com/inside.asp)