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Accounting for Farm Tank Milk¹

Milk Marketing Orders Division, USDA, Washington, D. C.

ABSTRACT

The purpose of this paper is to (a) review briefly the methods used to account for farm tank milk receipts, (b) indicate what may be considered normal or abnormal differences between farm measurements and plant weights, and (c) appraise current programs for assuring the accuracy of farm measurements.

AGREEMENT BETWEEN FARM WEIGHTS AND PLANT WEIGHTS

Average differences between farm and plant weight measurements within 0.25 to 0.50% ( to %) of the total quantity of milk measured at the farm are considered satisfactory at many plants.

Research data, discussed in an earlier paper on this subject (4), indicate that the majority of weight differences can be expected to be closer to 0.25% than to 0.50%. For example, in three research reports involving many weight comparisons and based upon a variety of plant measurement devices, receiving losses amounted to 0.19, 0.30, and 0.35% of the farm weights. From this, it was concluded that weight differences consistently exceeding 0.35% should be subject to further investigation, regardless of the plant measurement method that is used.

¹ Paper presented to Dairy Manufacturing Extension Section at the 57th Annual Meeting of the American Dairy Science Association, Maryland University, College Park, Maryland, June 18, 1962.