aAll 130 pairs were matched for breed composition by comparing sire and dam line records. Each pair was birthed together in the same group of ewes in the same location over a 45-day period. In additio
Arithmetic mean (±S.E.M.) [Range] worm counts differentiated into male, female and total worms and percentage efficacy (P.E.) of vaccinated lambs relative to unvaccinated control lambs. Results marked
