title: A comparison of serum harvesting methods and type of refractometer for determining total solids to estimate failure of passive transfer in calves.
abstract: Monitoring the passive transfer of immunoglobulins from colostrums particularly in noncentrifuged samples can be useful for calf health management programs. The results of total solids refractometry from centrifuge and noncentrifuge harvested sources of serum were highly correlated (R2 = 0.95). Results from a digital and a hand-held refractometer were highly correlated (R2 = 0.96).
authors.affiliation: Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
authors.forename: Melissa M
authors.initials: MM
authors.lastname: Wallace
authors.forename: Brenna D
authors.initials: BD
authors.lastname: Jarvie
authors.forename: Nicole R
authors.initials: NR
authors.lastname: Perkins
authors.forename: Ken E
authors.initials: KE
authors.lastname: Leslie
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000097:blood / Q000276:immunology; D002417:Cattle; D002498:Centrifugation / Q000662:veterinary; D003126:Colostrum / Q000276:immunology*; D007112:Immunity, Maternally-Acquired; D007074:Immunoglobulin G / Q000097:blood* / Q000276:immunology; D012031:Refractometry / Q000295:instrumentation / Q000379:methods / Q000592:standards / Q000662:veterinary*
chemical_list: D007074:Immunoglobulin G