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Experiments With and Practical Application of Heat Sterilization for All Parts of Milking Machines

Department of Veterinary Science, University of California, Berkeley, California

ABSTRACT

INTRODUCTION

The last twenty-five years have seen marked improvements in the construction of milking machines. Today a number of makes have been sufficiently perfected and are milking cows so successfully that they may be considered a practical success from the mechanical standpoint.

Labor difficulties due to the war gave a great impetus to the installation of milking machines. Today the capital invested in the manufacturing plants as well as in machines distributed on dairy farms is so large that investigation into the difficulties encountered in their operation is greatly needed.

A review of the literature of this country and abroad on such investigations shows it to be quite extensive. A great many experiments have been initiated to ascertain the mechanical difficulties and the relative production that can be secured with their use as compared with hand milking. With these factors we were not concerned but have devoted our attention to ascertaining the best method of eliminating excessive numbers of bacteria in machine drawn milk.