Fertility and immune reaction of heifers vaccinated with an adjuvanted Vibrio fetus vaccine

Kendrick, J.W.; Williams, J.; Crenshaw, G.L.; Vestal, T.J.

Journal of the American Veterinary Medical Association 158(9): 1531-1535

1971


ISSN/ISBN: 0003-1488
PMID: 5557245
Document Number: 37200
An adjuvant vaccine containing two strains of Vibrio fetus biotype 1 and one strain of V. fetus subtype 1 was used to vaccinate 99 yearling Hereford heifers. Heifers of similar age were left unvaccinated as controls. The heifers in both groups were exposed to infected bulls for approximately four months. Seventy-nine vaccinated and 62 of 99 unvaccinated heifers were found to be pregnant six months after the beginning of breeding.

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