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Equine Reproduction and Stud Medicine Q&A 17 (view source)
Revision as of 16:45, 6 September 2011
, 16:45, 6 September 2011no edit summary
|q1= What stage is this?
|q1= What stage is this?
|a1= Stage 2, during which the actual delivery of the foal takes place. Note the forelimbs enclosed within the bluish-white amnion.
|a1= Stage 2, during which the actual delivery of the foal takes place. Note the forelimbs enclosed within the bluish-white amnion.
|l1=
|l1=Parturition Behaviour - Mare
|q2= Under normal undisturbed circumstances, this stage of parturition should not exceed how many minutes?
|q2= Under normal undisturbed circumstances, this stage of parturition should not exceed how many minutes?
|a2= Thirty minutes; only very rarely will it normally exceed 1 hour. On average, this stage takes some 17 minutes.
|a2= Thirty minutes; only very rarely will it normally exceed 1 hour. On average, this stage takes some 17 minutes.
|l2=
|l2=Parturition Behaviour - Mare
|q3= What are the three stages of parturition and what are the principal characteristics of each?
|q3= What are the three stages of parturition and what are the principal characteristics of each?
|a3= Stage 1: increasing myometrial activity which, together with spontaneous fetal movements, will result in rotation of the cranial part of the fetal body into a dorsosacral position. The front legs and head are extended. Increased uterine activity will also result in dilation of the softened cervix. These processes usually result in discomfort which is demonstrated by restlessness (tail switching, frequently lying down and getting up) and signs of abdominal pain. Patchy sweating (flanks, neck, behind elbows) and yawning/flehmen are other external signs of this stage. Rupture of the allantochorionic membrane and the escape of the allantoic fluid indicates the end of this first stage. This stage may last one to several hours.
|a3= Stage 1: increasing myometrial activity which, together with spontaneous fetal movements, will result in rotation of the cranial part of the fetal body into a dorsosacral position. The front legs and head are extended. Increased uterine activity will also result in dilation of the softened cervix. These processes usually result in discomfort which is demonstrated by restlessness (tail switching, frequently lying down and getting up) and signs of abdominal pain. Patchy sweating (flanks, neck, behind elbows) and yawning/flehmen are other external signs of this stage. Rupture of the allantochorionic membrane and the escape of the allantoic fluid indicates the end of this first stage. This stage may last one to several hours.
Stage 3: expulsion of the placenta, which takes approximately 1 hour on average. Continuing myometrial activity plays an important role during this process.
Stage 3: expulsion of the placenta, which takes approximately 1 hour on average. Continuing myometrial activity plays an important role during this process.
|l3=
|l3=Parturition Behaviour - Mare
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