Hereditary parakeratosis in shorthorn beef calves.
Parakeratosis was diagnosed in 9 Shorthorn beef calves over a 4-year period. When pedigrees of these calves were analyzed, familial associations were strong. Thirty-six coefficients of relationship among all possible combinations of the 9 affected calves ranged from 0.5 to 39.8% and averaged 15.6%. All affected calves were descendants of bull A. Of 9 affected calves, 6 had bull A in their paternal and maternal pedigrees. The 3 remaining affected calves had bull A in their sire's pedigree and were born to 2 full-sib dams. Seemingly, parakeratosis in this Shorthorn herd was hereditary with the mode of inheritance being that of a simple autosomal recessive.
Vogt
D W
DW
Department of Animal Sciences, College of Agriculture, University of Missouri, Columbia 65211.
Carlton
C G
CG
Miller
R B
RB
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000235:genetics*; D005260:Female; D007642:Keratosis / Q000662:veterinary*; D008297:Male; D010241:Parakeratosis / Q000235:genetics / Q000662:veterinary*; D010375:Pedigree