Effect of prior natural exposure to Pasteurella haemolytica on resistance to experimental bovine pneumonic pasteurellosis
Open Access
- 1 December 1984
- journal article
- Published by American Veterinary Medical Association (AVMA) in American Journal of Veterinary Research
- Vol. 45 (12) , 2622-2624
- https://doi.org/10.2460/ajvr.1984.45.12.2622
Abstract
SUMMARY: The effect of prior natural exposure to Pasteurella haemolytica, as determined serologically, was studied with respect to resistance to experimental pneumonic pasteurellosis in 20 calves from 3 experiments. Resistance to challenge exposure was measured using a lesion-scoring system. As measured by a quantitative fluorometric immunoassay, naturally acquired serum antibody titers to the organisms were 0 to 228. There was a significant correlation (P < 0.05) between high naturally acquired antibody titers and resistance to transthoracic challenge exposure with P haemolytica.This publication has 0 references indexed in Scilit: