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A Comparison of Some Cellular and Chemical Constituents of Blood at Time of Parturition and after Administration of Adrenocorticotrophin¹

Department of Dairy Husbandry, University of Wisconsin, Madison

ABSTRACT

A comparison was made of the reaction of leucocytes and blood sugar to parturition and to the administration of 250 I.U. of ACTH. The stress of parturition caused a diminution in the per cent of circulating lymphocytes and eosinophils and an increment in the neutrophils and blood sugar. Administration of ACTH also caused a diminution in the per cent of circulating lymphocytes and eosinophils and an increment in the neutrophils and blood sugar. Generally the magnitude of change was greater from the dose of ACTH administered than from the stimulus of parturition.

The results of this study indicate an increased secretion from the adrenal cortex in response to the stress of parturition in the cow.

¹ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station.