Foaling Flashcards
What is serotonin converted to at night?
Melatonin
What does melatonin regulate?
The timing of the seasonal reproductive cyclicity by responding to changes in day length
What is the melatonin biosynthesis pathway>
- tryptophan
- 5-hydroxytryptophan
- serotonin
- N-acetylserotonin
- melatonin
When can you start the artificial light regime?
No later than December 1st
How much light is required for success?
16 hours
What is the egg survival after ovulation
8-12 hours
Sperm survival in mares tract?
24-72 hours
2nd dose of frozen semen can be given…
no longer than 6 hours after
Where does all insemination happen artificial ?
Tip of uterine horn
Ovulatory agent
Deslorelin - accelerates ovulation so can administer and then inseminate 24 hours later
hCG - OVULATION USUALLY OCCURS WITHIN 48 HOURS
When can you detect spherical shape?
14 days
When is ultrasound typically formed?
12-16 days post ovulation
When can you detect a heart beat?
25-30 days
When does post ovulation conceptus enter the uterus
day 6-8
When is the conceptus highly mobile
11-14 days
When does the conceptus produce oestrogen?
Day 10-20
What day does the conceptus stick to the uterine wall
Day 15-17
What day does the placenta develop?
85 days but is full functional by day 120-140
Stage 1 of parturition
foetal positioning and cervical dilation 1-4 hours
Stage 2 of parturition
Rupture of the chorioallantois and delivery of the foal 20-30 mins
Stage 3 of parturition
Expulsion of the fatal membranes and maternal uterine involution pithing 6 hours of foaling
Birth to nursing time..
110 mins
Birth to passing meconium time…
30 mins
Within first 5 minutes of birth
reflexes?
- pain reflex response
- reflex associated with standing
- suckling reflex (1.5 hours)
