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Care of Milking Machines¹

Division of Bacteriology and Dairy Research, Science Service, Department of Agriculture, Ottawa

ABSTRACT

In a recent paper by Mallman, Bryan and Begeman (3) it is stated: "There is a dearth of information on methods of cleaning milking machines. Most publications place emphasis on the sanitation. The most common practice in cleaning consists of flushing machines with cold water after each milking and then placing the tubes on the racks for either alkali or chlorine treatment. Under these conditions machines are washed once a week with hot water and a detergent. This procedure is very poor operating practice." Several of these statements should not be allowed to pass unquestioned. That "there is a dearth of information on methods of cleaning milking machines" is difficult to reconcile with the extensive literature on the subject. The assertion that flushing tubes with cold water, then filling with alkali solution "is very poor operating practice" should be supported by definite evidence since it is at variance with the results reported by several investigators (1, 2, 4, 5).

¹ Contribution No. 120 (Journal Series) from the Division of Bacteriology and Dairy Research, Science Service, Department of Agriculture, Ottawa.