A total of 164 Native cows and 304 buffaloes were examined from Gynaecological point of view throughout the year. The results showed that, the incidence of ovarian inactivity in cattle was 29.09 %, 17.16 %. 9.94 % and 12% during Autumn, winter, spring and summer respectively. The overall incidence of inactive ovaries was 17.2%. The corresponding values obtained for buffaloes were 32.38%. 16.12 %. 12.11 % and 21.07 %. The overall incidence of inactive ovaries in buffaloes was 19.42 %.