Akademik Veri Yönetim Sistemi
ACTA VETERINARIA BRNO, cilt.94, sa.4, ss.261-271, 2025 (SCI-Expanded, Scopus)
While failure of transfer of passive immunity (FTPI) is associated with high morbidity and mortality in beef calves, adequate transfer of passive immunity (ATPI) positively affects calf health, survival and performance. This study was aimed at the assessment of alterations in the serum biochemical indicators of beef calves with different passive immunity statuses. Blood samples were collected from 1-to 7-day-old, healthy beef calves (n = 51) by jugular venipuncture. Serum immunoglobulin G (IgG) concentrations were measured with the radial immunodiffusion (RID) assay. IgG concentrations of < 10 g/l were described as indicating FTPI, 10-24 g/l were described as indicating moderate transfer of passive immunity (TPI), and >= 24 g/l were described as indicating ATPI. Based on their serum IgG concentrations, calves were assigned to one of the passive immunity groups (FTPI, n = 15; moderate TPI, n = 10; ATPI, n = 26). Differences among the passive immunity groups for the biochemical indicators were determined by one way analysis of variance (ANOVA) or Kruskal Wallis test according to normality assumption of parameters. The gamma-glutamyl-transferase (GGT) activity, and serum total protein (STP), calcium (Ca), phosphorus (P) and cholesterol concentrations of the beef calves with ATPI were significantly higher than those with FTPI. Serum magnesium concentrations of the beef calves with ATPI were greater than those with FTPI. Serum aspartate aminotransferase activity, urea, albumin, beta-hydroxybutyric acid, and non-esterified fatty acid concentrations did not differ between the groups. In conclusion, serum concentrations of biochemical indices such as STP, GGT, cholesterol, Ca, and P were altered in the beef calves with FTPI.