Ocular squamous cell carcinoma in Simmental cattle in Zimbabwe |
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Authors: | W Den Otter FW Hill WR Klein LA Everse EJ Ruitenberg LT Van der Ven JW Koten PA Steerenberg JA Faber VP Rutten |
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Affiliation: | Department of Functional Morphology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands. |
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Abstract: | 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. |
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