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Abstract
Weanling pigs that had been confined in drylot from birth were fed a basal ration of ground yellow corn, wheat flour middlings, soybean meal, fish meal, tankage, minerals and fortified cod-liver oil or the basal ration supplemented with either (1) crystalline B-vitamins (2) six percent dried corn distillers' solubles, or (3) ten percent of alfalfa meal. The basal ration was very inadequate even though chemical analyses and vitamin assays indicated that it was adequate in the nutrients known to be required by the pig.
Supplementing the basal ration with six percent of dried corn distillers' solubles increased the gains 16 percent and death losses were decreased.
When the basal ration was supplemented with thiamin hydrochloride, riboflavin, nicotinic acid, calcium pantothenate, pyridoxine and choline chloride, growth response was increased and death losses were reduced from 31 to 9 percent. This supplementation was not as complete nutritionally as the addition of ten percent of alfalfa meal, but was more effective than dried corn distillers' solubles.
1 This investigation was made possible by the donation of funds and products to the University of Illinois by Hiram Walker & Sons, Inc., Peoria, Illinois. The crystalline vitamins were supplied by Lederle Laboratories, Inc., Pearl River, New York.
2 Acknowledgment is made to Damon Catron, formerly Associate in Swine Husbandry, and to R. H. McDade, Chief Swine Herdsman, for their assistance in conducting the experimental work.
3 Animal Husbandry Department, Urbana, Illinois.
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