Studies on follicular patterns in buffalo-heifers

Frequent palpation per rectum was used to delineate patterns of development and atresia of large follicles (> 0.80 cm) on the ovaries of pre-, peri- and postpubertal heifers. The average size of large follicles in prepubertal, peripubertal and postpubertal heifers were 1.25, 1.35 and 1.36 cm, respectively. In 65.39 per cent of the postpubertal heifers, midcycle follicles (> 0.80 cm) could be successfully palpated from day 9 to 13 of the estrous cycle. Moreover, the development and atresia of large follicles in heifers were found to be continuous processes. Follicles were exhibited on the ovaries regularly at intervals of 10-11 days.