Reliability of Averages of Different Numbers of Lactation Records for Comparing Dairy Cows

Abstract

This investigation was undertaken to determine a fair basis for comparing the productiveness of dairy cows with varying numbers of records. The problem concerns the values of various combinations of production records, both for predicting a cow's future records and for evaluating her transmitting ability. A previous publication (2) pointed out the importance of using all the records available rather than selected records.