Incidence of different tumors in bovines

摘要

The incidence of tumors in bovines is relatively increasing which undermine the productivity of animals. Cattle occupied the second place after dogs for incidence of tumors. A total of 59 samples suspected for neoplasia were collected in cattle (47 samples) and buffaloes (12 samples) during 2012-2014, out of which neoplasia were diagnosed in 57 samples. The tumors were classified based on histogenesis into tumors of epithelial origin, tumors of mesenchymal origin, mixed tumors and miscellaneous tumors, which constituted 54.38%, 42.09%, 1.75% and 1.75%, respectively. The benign and malignant tumors constituted 56.14% and 43.86%, respectively. The incidence was almost equal in male and female animals with 50.88% and 49.12%, respectively. The incidence of tumors was high in cattle (78.95%) than in buffaloes (21.05%).The tumors affecting skin and soft tissues constituted more than 50% of the total bovine tumors examined. Among the different bovine tumors, the highest number of cases were those of papilloma (21.05%) followed by squamous cell carcinoma (17.54%), fibroma (17.54%), lymphosarcoma (14.04%) and adenoma (7.02%). Two cases each of adenocarcinoma, melanoma and myxosarcoma were found, which constituted 3.51%. Basal cell carcinoma, hemangioma, leiomyoma, leiomyosarcoma, mast cell tumor, fibroleiomyoma and adamantinoma were seen in one case each (1.75%). In the present research, the findings revealed that the incidence of tumors affecting skin and soft tissues was highest in bovines when compared to other types of tumors.