Foaling and Dystocia in Mares

1
Foaling and Dystocia in Mares

• ABAS 4090

2
Stage I of Labor

• Signs of discomfort
• Increased heart rate
• Light sweating
• Change in shape
• Cervical and vulvular
• relaxation
• Duration 30 min to
• 4 hours

3
Stage II
Active Labor Should last only about 20
min Assist if the foal is not presented
normally or if there is no progress after each 5
minute period
4
Placental Compartments

• WATER Allantoic fluid
• SACK
• amnion

5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
Dystocia (difficult foaling)

• Malpositioning
• Large foal/small mare
• Weak mare
• Premature placental separation (Red Bag)

18
When to get help

• 4 hours labor without water breaking
• No front feet 15 minutes after water breaks
• Foal not delivered within 40 minutes of water
  breaking
• Abnormal presentation
• Red bag
• Retained placenta
• Abnormal placenta

19
Premature Placental Separation (Red Bag)
20
Normal Presentation
Mettler, 1989
21
Breech Presentation
Mettler, 1989
22
Posterior Presentation
Mettler, 1989
23
Hind limb Deviation
Mettler, 1989
24
Head and Neck Retained
Mettler, 1989
25
Foreleg Retained
Mettler, 1989
26
Foaling problems

• Uterine Torsion
• Uterine Rupture
• Internal Hemorrhage
• Other post parturient hemorrhages

27
Stage III
Tie up placenta Do not pull Clean mares
underside and bag Should pass within 3 hours
28
After Foaling

• 12 to 24 hr Uterine size reduced, obvious
  discharge normal
• 5 to 15 days Involution, resorption of
  microcaruncles by d7, Foal heat, cervix does not
  normally close until after ovulation.
• Day 10 mares with ovulations after day 10 post
  foaling have more normal conception and pregnancy
  rates.

29
Problems after foaling

• Bleeding
• Perineal and vulvar lacerations
• Retained placenta
• Delayed uterine involution
• Uterine infection
• Uterine horn invagination
• Prolapsed uterus

30

• http//www.shenandoahmini.com/situations.html