as promulgated by
the Federation of Animal Science Societies. All personnel working
with cattle and ticks were blinded to the treatment groups. Ten
Bos taurus animals (Black Angus) approx. 136–227 kg (300–500 lbs)
were used in this study. All animals were randomly assigned to
treatment groups. Half of the animals were vaccinated with the
Bm86-based anti-tick vaccine Gavac® (Lot M92011-3, 2 ml intramuscular injection, neck or rump, 1.5 needle) imported from
Mexico on weeks 0, 4, and 6. The remaining half was injected with
only an adjuvant carrier (1 ml intra-muscular injection, Montanide
50, Seppic, France). On week 8, each animal was infested with
250 mg (≈4500) larvae.