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Blood Plasma Vitamin A and Carotene of Dairy Calves treated with Sulfonamides^1,2

The Pennsylvania Agricultural Experiment Station, State College

ABSTRACT

Observations were made to determine possible effects of sulfonamide administration upon the blood plasma vitamin A and carotene levels of young calves.

On the basis of these data, it does not appear that sulfonamide therapy has any detrimental effects on the normal vitamin A and carotene metabolism of calves when the drugs are administered as recommended.

¹ Taken from data presented in a thesis to the graduate faculty of The Pennsylvania State College by Magnar Ronning in partial fulfillment of the requirements for the degree ofMaster of Science. The authors wish to express their appreciation to Sharp and Dohme, Inc., Glenolden, Pa., for supplying the sulfonamides used in this trial.

² Authorized for publication as paper no. 1579 in the Journal series of The Pennsylvania Agricultural Experiment Station.