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Changes in the Paper Electrophoretic Whey-Protein Pattern of Cows with Acute Mastitis ¹

Department of Animal Industries, North Carolina State College, Raleigh

ABSTRACT

Pre-treatment and post-treatment observations on 43 suspected cases of mastitis were made concerning: (1) the quality of the milk and the condition of the udder (barn tests); (2) the number of leucocytes in the milk; (3) the presence of bacteria in the milk, and (4) the relative amounts of the various whey proteins. The most consistent and obvious change in the whey-protein pattern of milk from mastitic quarters was the appearance of a fraction migrating at the rate of blood-serum albumin. Relative increases in the amount of immune globulins were also noted. The presence of blood-serum albumin in whey was consistently accompanied by high leucocyte counts, but the reverse was not necessarily true. There seemed to be little correlation between the presence of blood-serum albumin and bacteria in the milk. Blood-serum albumin in whey seems to be a reliable indicator of inflammation and, hence, mastitis.

¹ Published with the approval of the Director of the North Carolina Agricultural Experiment Station as Journal Article No. 966.