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Studies on Bovine Ocular Squamous Carcinoma ("Cancer Eye") III. Inheritance of Eyelid Pigmentation^{1, 2,}

Cancer Eye Study Section of the University of Texas M. D. Anderson Hospital and Tumor Institute, Houston

Abstract

The present study was undertaken to obtain estimates of heritability of the amount of pigmentation on the skin of the eyelids in Hereford cattle. The data were the pigmentation of 1117 offspring and 513 of their dams. The offspring were sired by 116 sires in three Oklahoma herds.

Heritability estimated from the regression of 733 offspring on dam was .44. The paternal half-sib intra-class correlation for 953 offspring by 116 sires yielded an estimate of .46. Possible biases in these and other estimates are considered. Means of reducing the incidence of cancer eye are also presented.

¹ Publication No. 3 of the Cancer Eye Study Section of The University of Texas M. D. Anderson Hospital and Tumor Institute, Houston, Texas.

² This investigation was supported in part by research Grant G-1 from the American Cancer Society and Grant C-1751 from the National Cancer Institute of the National Institutes of Health, Public Health Service.

³ Public Health Service Research Fellow of the National Cancer Institute, located at the Department of Animal Husbandry, Oklahoma A & M College, Stillwater, Oklahoma; Professor, Department of Animal Husbandry, Oklahoma A & M College; and Professor, Department of Animal Husbandry, Iowa State College, Ames, Iowa, respectively.