Comparison of turbidometric immunoassay, refractometry, and gamma-glutamyl transferase to radial immunodiffusion for assessment of transfer of passive immunity in high-risk beef calves.

ABSTRACT:

Background

Attainment of adequate transfer of passive immunity (TPI) is critical to health of calves; however, studies comparing available tools for measurement of TPI in individual beef animals are limited.

Objectives

To report agreement between 4 tests evaluating individual TPI status in beef calves.

Animals

One hundred ninety-six beef calves born to cows and heifers presenting for calving management or dystocia.

Methods

Retrospective study to assess serum immunoglobulin (IgG) concentrations via turbidimetric immunoassay (TI), gamma-glutamyl transferase (GGT), serum total protein (TP), and single radial immunodiffusion (RID; reference standard). Test agreement was evaluated using Passing-Bablok regression, Bland-Altman analysis, Cohen's kappa, and receiver op

SUBMITTER: Kreuder AJ 

PROVIDER: S-EPMC10473048 | biostudies-literature | 2023 Sep-Oct

REPOSITORIES: biostudies-literature