Abstract
Morphological observations of 4, 301 bovine necropsied cases collected in Miyazaki Prefecture between 1979 and 1997 at the Miyazaki University showed an incidence of congenital heart disease (CHD) of 8.7%(373/4, 301) among the necropsied cases and 13.2%(373/2, 826) among malformed cases. These values are higher than those in previous reports on both animals and human beings. Anal atresia, cleft palate and anomalies of the eye, the spleen and genito-urinary system, and the sternum and costae were the most frequent CHD-associated extracardiac abnormalities.
