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The Effect of Liberal B-Vitamin Supplementation on Growth of Weanling Pigs Fed Rations Containing a Variety of Feedstuffs¹

Michigan Agricultural Experiment Station

Abstract

Weanling 24-pound pigs were self-fed a basal ration of corn, oats, expeller soybean meal, meat scraps, alfalfa meal and complex mineral mixture on concrete floors.

Calcium pantothenate, riboflavin and nicotinic acid when added to the basal ration brought about a significant increase in daily gains, prevented the occurrence of deficiency symptoms, and reduced the feed required per unit of gain 22 to 25 percent.

In two trials supplements of thiamine, .pyridoxine and choline failed to further increase gains or lower the feed requirement. In one trial, vitamin B₁₂ concentrate also failed to increase gains and efficiency above the increase due to the supplement of pantothenic acid, nicotinic acid and riboflavin.

It is concluded that the rations used were deficient in pantothenic acid, nicotinic acid and riboflavin under the conditions of these trials and that liberal supplementation of these vitamins overcame the deficiency.

¹ Published with the approval of the Director of the Michigan Agricultural Experiment Station as Journal Article No. 1039 (n.s.)

² Departments of Animal Husbandry, Agricultural Chemistry and Animal Pathology, Michigan State College, East Lansing. This work was supported in part by a grant from Merck and Company, Inc., Rahway, New Jersey. The authors acknowledge the cooperation of Fred Rinker, swine technician, and M. J. Francis, Farm Manager of the Southern Michigan Prison, Jackson, Michigan, for help and facilities in conducting Trial B.