Evaluation of 5 methods for diagnosing failure of passive transfer in 160 Holstein calves

Abstract

The digital Brix refractometer and the digital refractometer provide accurate and clinically useful methods for identifying dairy calves with FTPI. In this study, the excellent performance of the Brix refractometer was likely due to the use of a fixed sample volume (200 μL) and a uniform sample temperature at the time of measurement.