Seasonal patterns of total and Ostertagia-specific IgE in grazing cattle.
Serum samples, collected monthly from January through December 1988 from 10 cows, their calves, and 10 yearling heifers, were used to determine total and Ostertagia-specific IgE levels. In addition, serum pepsinogen concentration, fecal egg counts, and body weights were measured. The following observations were made. (1) Total and Ostertagia-specific IgE levels followed similar seasonal patterns, being generally highest in the spring. (2) Breed and/or sire effects on total IgE levels were observed, with cattle from Angus-cross lines having higher levels than cattle of the other breeds tested. (3) Based on fecal egg counts, adult populations of Ostertagia ostertagi paralleled circulating IgE levels in the calves.
Baker
D G
DG
Department of Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis 95616-8738.
Gershwin
L J
LJ
D000818:Animals; D000909:Antibodies, Helminth / Q000097:blood*; D000918:Antibody Specificity; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology*; D005243:Feces / Q000469:parasitology; D005260:Female; D007073:Immunoglobulin E / Q000097:blood*; D010028:Ostertagia / Q000276:immunology*; D010029:Ostertagiasis / Q000276:immunology / Q000662:veterinary*; D010270:Parasite Egg Count / Q000662:veterinary; D010435:Pepsinogens / Q000097:blood; D012621:Seasons
D000909:Antibodies, Helminth; D010435:Pepsinogens; D007073:Immunoglobulin E