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Vitamin B₆ (Pyridoxine) in the Nutrition of the Pig

University of California^,2

Abstract

In these studies, because of faulty technique, we failed in the first 2 experiments to demonstrate that vitamin B₆ was necessary for the young pig. In the last experiment, however, when the floors was kept practically free of molds and yeasts, it was shown that the young pig needs this nutritional factor. The deficient symptoms were similar to those described by Chick (1938) of pigs fed a diet deficient in the eluate factor used by them. It seems certain that the vitamin B₆ in the eluate factor was responsible for the results.

It appears that a lowered food intake toward the end of the experiment resulted in some symptoms of a pantothenic acid deficiency in certain of the vitamin B₆ deficient individuals. There were no such symptoms in the control group, even though the only difference in the diets was the inclusion of pyridoxine in their feed.

That vitamin B₆ is necessary in the diet of the pig has been demonstrated.

¹ The authors express their gratitude to Mrs. Lillian Lagemann for making the blood call counts, smears, and some of the hemoglobin determinations; to Dr. F. R. Smith, who made the yeast and mold population studies; and, to Lt. N. R. Ittner, who helped with the first 2 experiments and who aided in organizing the last experiment before joining the armed forces.

² Division of Animal Husbandry, College of Agriculture, Davis, California.