Journal Issue:
Iowa State University Veterinarian: Volume 24, Issue 3

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The Epidemiology of Johne's Disease
( 1961) Kopecky, Kenneth ; Iowa State University Digital Repository

What does the epidemiologist concern himself with when studying an outbreak of Johne's disease? When the disease is first diagnosed in a herd many facts must be determined. First, how many animals are infected? This is difficult to determine as will be seen in the section on diagnosis. Second, where did the disease come from and what caused the breakdown? Since the natural incubation period has been determined (Hole, 1958), the investigator cannot look at past records of the herd and determine the source of the disease.

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Alumni News
( 1961) Veterinarian, Iowa State University ; Iowa State University Digital Repository
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Torsion of the Liver of a Sow
( 1961) Flint, John ; Iowa State University Digital Repository
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Student News
( 1961) Veterinarian, Iowa State University ; Iowa State University Digital Repository
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Diseases of Mink
( 1961) Ford, Thomas ; Iowa State University Digital Repository

The mink ranching industry is a natural outgrowth of trapping mink and selling the pets. To supply the increasing demand for garments, mink ranching has steadily expanded until at present it has grown into an industry with an annual gross product of approximately 100 million dollars. By breeding and raising mink under controlled conditions, ranchers are able to produce a higher quality pelt in a variety of mutant colors. However, by nature the mink is not adapted to living in a small cage in close proximity to hundreds or thousands of other mink and this has made it susceptible to many disease conditions. Also, the intensive inbreeding programs carried on by ranchers to develop the mutant color strains has brought some undesirable characteristics from a disease standpoint.

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