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Equine Breeding > Foaling > Flashcards

Foaling Flashcards

1
Q

What is serotonin converted to at night?

A

Melatonin

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2
Q

What does melatonin regulate?

A

The timing of the seasonal reproductive cyclicity by responding to changes in day length

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3
Q

What is the melatonin biosynthesis pathway>

A
  • tryptophan
  • 5-hydroxytryptophan
  • serotonin
  • N-acetylserotonin
  • melatonin
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4
Q

When can you start the artificial light regime?

A

No later than December 1st

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5
Q

How much light is required for success?

A

16 hours

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6
Q

What is the egg survival after ovulation

A

8-12 hours

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7
Q

Sperm survival in mares tract?

A

24-72 hours

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8
Q

2nd dose of frozen semen can be given…

A

no longer than 6 hours after

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9
Q

Where does all insemination happen artificial ?

A

Tip of uterine horn

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10
Q

Ovulatory agent

A

Deslorelin - accelerates ovulation so can administer and then inseminate 24 hours later
hCG - OVULATION USUALLY OCCURS WITHIN 48 HOURS

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11
Q

When can you detect spherical shape?

A

14 days

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12
Q

When is ultrasound typically formed?

A

12-16 days post ovulation

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13
Q

When can you detect a heart beat?

A

25-30 days

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14
Q

When does post ovulation conceptus enter the uterus

A

day 6-8

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15
Q

When is the conceptus highly mobile

A

11-14 days

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16
Q

When does the conceptus produce oestrogen?

A

Day 10-20

17
Q

What day does the conceptus stick to the uterine wall

A

Day 15-17

18
Q

What day does the placenta develop?

A

85 days but is full functional by day 120-140

19
Q

Stage 1 of parturition

A

foetal positioning and cervical dilation 1-4 hours

20
Q

Stage 2 of parturition

A

Rupture of the chorioallantois and delivery of the foal 20-30 mins

21
Q

Stage 3 of parturition

A

Expulsion of the fatal membranes and maternal uterine involution pithing 6 hours of foaling

22
Q

Birth to nursing time..

A

110 mins

23
Q

Birth to passing meconium time…

A

30 mins

24
Q

Within first 5 minutes of birth

reflexes?

A
  • pain reflex response
  • reflex associated with standing
  • suckling reflex (1.5 hours)
25
Q

What does colostrum do?

A

Transfers vitally important immune help

Equine Breeding (3 decks)

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