Process of parturition
Answers
Answer:
Stage 1: The first stage of parturition is dilation of the cervix. ... Stage 2: The second stage of parturition is defined as the delivery of the newborn. It begins with the entrance of the membranes and fetus into the pelvic canal and ends with the completed birth of the calf.
Stage 3: The third stage of parturition is the shedding of the placenta or fetal membranes. In cattle this normally occurs in less than 8 to12 hours. The membranes are considered retained if after 12 hours they have not been shed. Years ago it was considered necessary to remove the membranes by manually "unbuttoning" the attachments. Research has shown that manual removal can be detrimental to uterine health and future conception rates. Administration of antibiotics usually will guard against infection and the placenta will slough out in 4 to 7 days. Contact your veterinarian for the proper management of retained placenta.
Answer:
After the gestation period of 9 months, the process of delivery caused by vigorous contraction of uterus is called the parturition.
The foetus and placenta gives mild contractions called the foetal ejection reflex at the starting.
This triggers the release of oxytocin from pituitary which acts on uterine muscles and causes larger uterine contractions.
These contractions are induced by the complex non endocrine mechanism.
The baby along with placenta is expelled out of the uterus at the end.