The process of delivering a fully grown fetus from the female uterus after completion of the normal pregnancy (gestation) period is known as parturition.
This is a very critical management phase in the production of livestock as it requires a hefty amount of caring and management.
Phases of parturition:
Preparatory stage: During this stage, the female prepares to give birth.
Expulsion stage: During this stage, the uterine walls begin to contract more intensely with increased force, hence pushing the fetus into the birth canal.
Cleaning stage: After parturition, the fetal membranes and another afterbirth must be flushed out from the uterus, retention of which can lead to serious illness or even death of the mother.