Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
For many years it has been common belief that ascorbic acid need not be considered in the feeding of domestic animals. The basis for this belief is the fact that domestic animals are capable of making this vitamin in their bodies. Because of this it was thought that there was no occasion for an avitaminosis of ascorbic acid.
"Ascobic Acid Therapy,"
Iowa State University Veterinarian: Vol. 8
, Article 7.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol8/iss2/7