REVUE DE MEDECINE VETERINAIRE, cilt.155, sa.1, ss.27-30, 2004 (SCI-Expanded)
The aim of this study was to explore the usefulness of serum gamma-glutamyl-transferase activity (GGT) and total serum protein (TSP) as markers of hypogammaglobulinaemia in early neonatal calves. These investigations were performed on 40 Holstein-fresian 1 day old calves. Blood samples were collected by jugular venipuncture at 24 h and immunoglobulin G (IgG) concentrations, activities of GGT and TSP values in sera were determined. Calves were divided into three groups according to the serum IgG concentrations. Two calves had complete failure of passive transfer (IgG : < 8 g/P), 18 calves had partial failure (IgG : < 8-16 g/P), and 20 calves had normal passive transfer (IgG : > 16 -R). There was a positive significant (p < 0.05) correlation between serum IgG scores and serum GGT activities (r = 0.566). In addition there was a positive significant (p < 0.05) correlation between serum IgG scores and serum proteinemia (r = 0.462).