Specific antibodies of Pasteurella multocida in newborn calves of vaccinated dams.
Twenty-five newborn Holstein Friesian calves, from dams vaccinated against haemorrhagic septicaemia (HS), were tested repeatedly over the first 6 months of life to monitor the transferred antibody levels against HS. Enzyme-linked immunosorbent assays were used to measure the specific HS antibodies with antigens from Pasteurella multocida strains B:2 and E:2. There was a significant curvilinear relationship between the monitored IgG response and the age of the calves. Peak serum IgG levels were obtained during the period from 8 to 16 weeks of age. Beyond this age, the concentration of IgG in the serum fell away.
el-Eragi
A M
AM
Central Veterinary Research Laboratories, PO Box 8067, Al Amarat, Soba, Khartoum, Sudan.
Mukhtar
M M
MM
Babiker
S H
SH
D000367:Age Factors; D000818:Animals; D000831:Animals, Newborn; D000907:Antibodies, Bacterial / Q000097:blood*; D001428:Bacterial Vaccines; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology / Q000382:microbiology / Q000517:prevention & control*; D003126:Colostrum / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D005260:Female; D006483:Hemorrhagic Septicemia / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary*; D007112:Immunity, Maternally-Acquired; D007074:Immunoglobulin G / Q000097:blood; D016979:Pasteurella multocida / Q000276:immunology*
D000907:Antibodies, Bacterial; D001428:Bacterial Vaccines; D007074:Immunoglobulin G