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abortus ovis absorption acetone acid agglutinins alkaloid ammonium sulphate amount animals antigen appear bacilli bacteria blood bones Calc calves cent consumption containing Crude fibre crude protein cultures dermatitis diet Digestibility coefficients dilution disease dose ecdyses effect eggs emulsion Ether extract ewes examination experiments exsheathed faeces filtrate Food residues fowl paralysis glycerine guinea-pigs immune incubation infection inoculated intestinal intravenous Lamb larvae lesions lime magnesium mesenteric glands metabolism method microfilariae mineral months myxomatosis N-free extractives negative nematode nematode infestation nitrogen balance non-specific normal observed obtained occurred Organic matter ovitoxicus parasites pepsin Period ration phosphate phosphorus poll evil precipitate produced protein rabbits reaction saliva Sample serum serum calcium sheaths sheep showed skin sodium sodium chloride solution specific strain substance symptoms Table taxine tested tissues Total ash toxin tubercle tubercle bacilli tuberculin tuberculosis Urine vaccinated virus welchii worm egg-count