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Crystalline Amino Acid Mixtures as the Sole Source of Nitrogen for the Baby Pig

Illinois Agricultural Experiment Station³, Urbana

Abstract

Mixtures of essential amino acids were compared for their ability to promote normal performance of the baby pig. Mixtures simulating a rat amino acid diet or the calculated requirements of the baby pig gave the best performance. A mixture which had been reported to give good performance when fed to weanling pigs gave poor results when fed to baby pigs. Changing the essential and non-essential nitrogen content of the diet had little effect on performance on an amino acid mixture which apparently was not well balanced. The addition of 3 % protein as crude casein to an amino acid diet improved pig performance primarily by improving the efficiency of feed utilization.

¹ Present address: Monsanto Chemical Company, 800 N. Lindbergh, St. Louis 66, Missouri.

² Deceased.

³ The authors wish to acknowledge Chas. Pfizer & Co., Inc., Brooklyn, New York; Commercial Solvents Corporation, Terre Haute, Indiana; Merck & Co., Rahway, New Jersey; and E. I. DuPont de Nemours & Co., Wilmington, Delaware, for funds and products which made this study possible.