THE EFFECT OF LEPTOSPIRA HARDJO VACCINE IN A NORTHERN QUEENSLAND BEEF HERD
- 1 June 1976
- journal article
- Published by Wiley in Australian Veterinary Journal
- Vol. 52 (6) , 258-260
- https://doi.org/10.1111/j.1751-0813.1976.tb00101.x
Abstract
In a northern Queensland beef herd where there was serological evidence of L. hardjo infection, lactation failure or wastage between pregnancy diagnosis and branding was 11.9% in animals vaccinated with a single dose of a L. hardjo vaccine and 19.4% in unvaccinated controls. This difference was statistically significant (P less than 0.05). Vaccination caused a significant (P less than 0.05) reduction in rate of lactation failure in heifers but not in other classes of cows.Keywords
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