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The Effect of Rations on Selected Vitamin Content of Sows' Milk¹

Iowa Agricultural Experiment Station

Abstract

Either three ml. of posterior pituitrin or two ml. of pitocin proved satisfactory in obtaining milk from sows without any apparent harmful effects to the sow.

Riboflavin, niacin and pantothenic acid content of sows' milk was increased when ten percent dehydrated alfalfa meal was added to a basal ration of corn, soybean oil meal, tankage, and minerals in the first experiment. However, only the pantothenic acid was significantly increased statistically. In another experiment, the addition of dehydrated alfalfa meal and meat and bone scraps to the basal ration increased the riboflavin content of the milk significantly. In the latter experiment, no significant differences were found in the pantothenic acid or niacin content of the milk. However, through lactation, the quantity of riboflavin and pantothenic acid in sows' milk in the latter experiment followed essentially the same pattern as in the former. Yet, the pattern for the niacin content of the sows' milk from the latter experiment failed to conform to that found in the former.

¹ Journal Paper No. J-2339 of the Iowa Agricultural Experiment Station, Animal Husbandry Department, Ames, Iowa. Project 959.

² Now on the Animal Husbandry Staff, University of Kentucky. Lexington, Kentucky.

³ The authors wish to acknowledge the assistance of Dr. R. A. Rasmussen and associates. Hiram Walker and Sons, Inc., of Peoria, Illinois, and Dr. Tom Jukes, Lederle Laboratories, Inc., Pearl River, New York, in determining the vitamin assays. Acknowledgment is made to Mr. Don Quinn and Dr. T. S. Leith for their assistance in collecting the milk samples.