assisted parturition Flashcards
what are the 3 stages of normal parturition
1- onset of uterine contractions/dilation of cervix
2- delivery of foetus
3- expulsion of foetal membranes
what is a polytocus species?
gives birth to multiple offspring
define primiparous
1st time birth
signs of stage 1
onset of contractions, cervix dilations, foetal movement (to get into right position) and allantochorion forced through canal
what happens at the end of stage 1
water bag (allantochorion) ruptures
what happens in stage 2
rupture of allantochorion (water bag)
expulsion of foetus through uterine and abdominal contractions
how long should it take for a lamb and twins to be delivered
an hour
30 minutes within each other for twins
what happens in stage 3
placenta (foetal membranes) expelled through action of uterine contractions
how long should it be for the placenta to be expelled after birth?
up to 3 hours
when is placenta expelled in polytocus species?
with or just after each species.
when to intervene
farmer tried and failed to deliver foetus.
foetus abnormally positioned
no progress 30-60 minutes after rupture of water bag
abnormal discharge
prolapse
when to intervene in polytocus animals
when more than 30 mins have elapsed between offspring.
define multiparous
given birth before
define viviparous
expelling foetus from body
define oviporous
external eggs
