The Hereditary Aspect of Eye Cancer in Hereford Cattle

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Abstract
According to the evidence presented, there appears to be hereditary susceptibility to eye cancer. In the herd studied the average incidence was found to be 4.7 percent and the percentage of incidence increased with the age of the animal. There were pronounced increases at five and again at seven years of age. Almost 20 percent of the animals affected were mother-and-daughter pairs and in one family carcinomas have been found in each generation up to the present time. The progeny of two sires had an especially high percentage of lesions. In view of the findings described in this paper, certain control measures were suggested. Copyright © . .