Hemoconcentration differs in neonatal dairy calves: Considerations for assessment of transfer of passive immunity

Abstract

Graphical Abstract Summary: Individual blood samples from newborn calves show variability in the noncellular proportion of blood during the time of transfer of passive immunity (TPI) assessment. Categorization of TPI using unadjusted total protein concentration (uTP) was compared with total protein concentration adjusted using the sample average proportion of plasma in blood (aTP). Adjusting total protein increased the proportion of calves with poor or fair TPI and decreased the proportion of calves with good or excellent TPI. Created with BioRender.com.