Detection of Mannheimia haemolytica-Specific IgG, IgM and IgA in Sera and Their Relationship to Respiratory Disease in Cattle

Authors

Korakrit Poonsuk, University of Nebraska-LincolnFollow
Carita Kordik, University of Nebraska-LincolnFollow
Matthew M. Hille, University of Wyoming & University of Nebraska-LincolnFollow
Ting-Yu Cheng, The Ohio State UniversityFollow
William B. Crosby, Mississippi State UniversityFollow
Amelia R. Woolums, Mississippi State UniversityFollow
Michael L. Clawson, USDAFollow
Carol G. Chitko-McKown, USDA ARS Roman L. Hruska U.S. Meat Animal Research CenterFollow
Bruce Brodersen, University of Nebraska-LincolnFollow
John Dustin Loy, University of Nebraska-LincolnFollow

Date of this Version

2023

Citation

Poonsuk, K.; Kordik, C.; Hille, M.; Cheng, T.-Y.; Crosby, W.B.; Woolums, A.R.; Clawson, M.L.; Chitko-McKown, C.; Brodersen, B.; Loy, J.D. Detection of Mannheimia haemolytica-Specific IgG, IgM and IgA in Sera and Their Relationship to Respiratory Disease in Cattle. Animals 2023, 13, 1531. https:// doi.org/10.3390/ani13091531

Comments

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license

Abstract

Mannheimia haemolytica is one of the major causes of bovine respiratory disease in cattle. The organism is the primary bacterium isolated from calves and young cattle affected with enzootic pneumonia. Novel indirect ELISAs were developed and evaluated to enable quantification of antibody responses to whole cell antigens using M. haemolytica A1 strain P1148. In this study, the ELISAs were initially developed using sera from both M. haemolytica-culture-free and clinically infected cattle, then the final prototypes were tested in the validation phase using a larger set of known-status M. haemolytica sera (n = 145) collected from feedlot cattle. The test showed good inter-assay and intra-assay repeatability. Diagnostic sensitivity and specificity were estimated at 91% and 87% for IgG at a cutoff of S/P ≥ 0.8. IgM diagnostic sensitivity and specificity were 91% and 81% at a cutoff of sample to positive (S/P) ratio ≥ 0.8. IgA diagnostic sensitivity was 89% whereas specificity was 78% at a cutoff of S/P ≥ 0.2. ELISA results of all isotypes were related to the diagnosis of respiratory disease and isolation of M. haemolytica (p-value < 0.05). These data suggest that M. haemolytica ELISAs can be adapted to the detection and quantification of antibody in serum specimens and support the use of these tests for the disease surveillance and disease prevention research in feedlot cattle.