Statistical Considerations for Milking Time Tests

Summary: Milking parlors equipped with milk meters and electronic data collection systems offer the possibility of automated assessment of short-term milking performance. Data that can be used to assess either operator or milking machine performance includes milking time, average and peak milk flow rates, and milk production for individual cows. This paper presents considerations for measurement techniques and statistical analysis of milking time data. Sample size and statistical power consideration for means tests and experimental designs are discussed. This methodology may be valuable for troubleshooting or testing before and after installation of new milking equipment.