Reinecke, R.K.; Bruckner, Christel; De Villiers, I.L.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B.
(Published by the Government Printer, Pretoria., 1980)
Groups of Merino weaners were dosed with infective larvae of Trichostrongylus axei in numbers ranging from 20 000 - 50 000 and challenged 3 months later with 50 000 infective larvae of Haemonchus contortus. When half the ...