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
Various loss estimates due to mastitis in dairy herds are alarming. Figures given range from $100 per cow per year to ten percent loss of production and production potential. If due only to economic survival in this age, these losses must be recognized and minimized. In addition where there are so many starving people in the world, we are morally bound to be more efficient in the production of milk.
Johanns, Clarence J.
"Thoughts on Bovine Mastitis Control Programs,"
Iowa State University Veterinarian: Vol. 30
, Article 1.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol30/iss2/1