Ocular squamous cell carcinoma in Simmental cattle in Zimbabwe.
In Zimbabwe, ocular squamous cell carcinoma (OSCC) was frequently observed in 5 breeding herds of Simmental cattle, a Bos taurus breed originating from Switzerland. In these herds, initial signs of OSCC were already noticeable in cattle about 3 years old. Gradually, OSCC prevalence increased, and 36 to 53% of cattle over 7 years old had 1 or more tumors. More tumors developed in Simmental cattle with periorbital white skin than in cattle with periorbital pigmented skin. Other breeds of cattle (eg, Friesian) also are partly white-faced and live in Zimbabwe in a comparable environment; yet, OSCC prevalence was lower in those breeds.
Den Otter
W
W
Department of Functional Morphology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
Hill
F W
FW
Klein
W R
WR
Everse
L A
LA
Ruitenberg
E J
EJ
Van der Ven
L T
LT
Koten
J W
JW
Steerenberg
P A
PA
Faber
J A
JA
Rutten
V P
VP
D000375:Aging; D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000662:veterinary*; D002417:Cattle; D002418:Cattle Diseases; D005134:Eye Neoplasms / Q000453:epidemiology / Q000662:veterinary*; D005260:Female; D008297:Male; D016017:Odds Ratio; D013045:Species Specificity; D015030:Zimbabwe / Q000453:epidemiology