Abstract
Twenty White Dorper ewes will be bred with two rams of the same breed. Pregnant ewes will be identified. In thepre-lambing period, half of the pregnant ewes will receive an intramuscular immunization with a 24kDa excretory-secretory recombinant protein of Haemonchus contortus combined with an oil adjuvant; the other half will receiveonly the adjuvant. Plasma samples will be collected from…