183. Errors involved in the estimation of the lactation yield of protein according to the intervals between sampling

Abstract

Variations in protein yield of a cow are due to changes both in her yield of milk and in the percentage of protein in her milk. If it were possible to have, for each day of lactation, figures for the yield of milk and its percentage of protein, the estimation of lactation yield of protein would be easy, but in practice this is not possible since the determination of protein in milk is a long and laborious process.