Milking is the largest single use of labor on a dairy. The main reason for investing in a milking parlor is to increase labor efficiency, says Doug Reinemann, professor and director of the UW Milking Research and Instruction lab at the University of Wisconsin-Madison. Increasing the number of cows milked per person hour will increase the profitability of the operation.
Other motivating factors include improved working conditions, increased uniformity and quality of milking, and attracting and keeping hired or family labor. These benefits must be weighed against the capital cost of the parlor.
A combination of these and other factors unique to each dairy will influence the final decision as to the type and size of parlor to be built. This topic is discussed by Reinemann in a recent installment in a University of Wisconsin Milk Quality "Milking Systems and Parlor Management Weekly Series."
Source: UW Milk Quality