Date of this Version
Loeffel, William J., Thalman, Ray R., Olson, F.C. and Olson, F.A. (1931) Studies of rickets in swine (Research Bulletin: Bulletin of the Agricultural Experiment Station of Nebraska No. 58)
During the years 1925 to 1929 inclusive, the Nebraska Agricultural Experiment Station carried on a series of four experiments to study the importance of the antirachitic factors in the nutrition of swine. Vitamin D as obtained from cod-liver oil and the radiant-energy factor of sunlight were the sources of the antirachitic factors that received primary consideration. Emphasis was placed upon the study of the symptoms and lesions produced in pigs fed a rickets-producing ration.