The females of placental mammals exhibit cyclical changes in the activities of ovaries, accessory ducts and hormones during the reproductive phase.These cyclic changes are called oestrus cycle.It is sen in non-primates such as cows,sheep.
The females of placental mammals exhibit cyclical changes in the activities of ovaries, accessory ducts and hormones during the reproductive phase.These cyclic changes are called oestrus cycle.It is sen in non-primates such as cows,sheep.