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The State College of Washington
Abstract
Under the conditions of the experiment reported herein, no advantage was shown by adding a vitamin B12 concentrate, crystalline vitamin B12 (injected), an "animal protein factor" concentrate, or alfalfa and fish meal to a purified basal ration for the growing pig.
No significant differences were found in average daily gain, pounds of feed per pound of gain, hemoglobin levels or red and white blood cell counts between the various lots of pigs in this experiment.
Further research needs to be done on the requirement for this vitamin by the growing pig.
1 Published as Scientific Paper No 850, Agricultural Experiment Stations, Institute of Agricultural Sciences, State College of Washington, Pullman, Washington.
2 Submitted in partial fulfillment of the requirements for the Ph.D., The State College of Washington.
3 We are indebted to Dr. D. F. Green and Merck & P Co., Rahway, N. J. for supplying the Crystalline Vitamin B12, vitamin B12 concentrate and other B-complex vitamins. The cooperation of Dr. T. H. Jukes and Lederle Laboratories, Pearl River, N. Y., in supplying the Animal Protein Factor Concentrate and the Folic Acid is gratefully acknowledged. The Vitamin A & D oil (Oladal) was supplied through the courtesy of Dr. E. B. Carter, Abbott Research Laboratories, North Chicago, Ill.
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