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Mare and Foal Health
             In this section we would like to go over general broodmare and foal management and health issues.  These include a gestation table, worming and vaccination recommendations and other information that you may find useful.

Gestation Table
             Gestation tables can be useful in determining when to breed a mare to ideally get mare to foal in a particular time period or to determine if a mare is foaling prematurely.  The average gestation of mares is 340 days.  However, mares have gone as long as 370 days and had normal foals.  There are conditions that can lead to lengthening gestation length and it may be warranted to consult your veterinarian if your mare is overdue by more then a week.  Often mares that have foaled previously will foal very near the length of gestation of their previous foals.  Premature foals (more then a few days) can have significant orthopedic and developmental disorders and it should warrant a visit from your veterinarian. 

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Mare Care

Prebreeding:
  • · Breeding Soundness Exam/ Ultrasound for Ovulation
  • · Deworm for all stages of encysted small strongyles
  • · Vaccinate for rabies
1st Trimester : ~114 days.
  • · 14-16 days post breeding– Ultrasound for pregnancy and rule out twins.
  • · 25-29 days post breeding– Ultrasound to reconfirm viable pregnancy and rule out twinning.
  • · 60-70 days post breeding– Ultrasound for fetal sexing if desired.
  • · Monitor progesterone levels in at risk mares.
  • · 1st deworming after 60 days of pregnancy.
  • · 1st vaccination for EHV-1 at 3 months (optional)
2nd Trimester: ~115-227 days.
  • · 2nd vaccination for EHV-1 at 5 months (Recommended)
  • · Maintain hoof and dental care.
  • · 2nd deworming 90 days after 1st.
3rd Trimester: ~228-340 days.
  • · 3rd vaccination for EHV-1 at 7 months (Recommended)
  • · Booster Vaccinations at 9 months: EHV 1/4, EWT, Flu/Rhino, WNV, Rabies.
  • · Open Caslicks, increase level of nutrition
  • · Optional Vaccinations (consult your veterinarian)- Strangles, PHF, botulism and rotavirus.
  • · 3rd deworming 30-45 days prefoaling.
Foal Care
Post Foaling
· VERY IMPORTANT: 
  • · Save and weigh placenta
  • · Vet exam within 24 hours
  • · Test serum IgG (antibodies) concentration in 1st 12-18 hours
  • · Deworm mare 24-48 hours post foaling
  • · Dip umbilical stump: Twice daily for 2-3 days.
  • · Monitor for nursing, meconium passage, urination and conformation.
30-120 days of age
  • · Begin creep feeding
  • · Monitor body condition, growth rate and conformation
  • · IMPORTANT: Foals that grow too fast can be predisposed to orthopedic conditions such as osteochondrosis desicans (OCD)
  • · Deworm for ascarids at 6-8 weeks of age
  • · Deworm 6-8 weeks later
120-240 days of age
  • · Between 150-180 days Vaccinate for WNV, EHV 1/4, EWT and rabies.  Optional vaccinations: PHF and strangles
  • · Deworm 6-8 weeks after 2nd deworming
  • · Booster Vaccines 4-6 weeks after primary vaccination
  • · Deworm 6-8 weeks after 3 deworming.
240-300 days of age
  • · Booster vaccination for EHV 1/4 and EWT
  • · Begin vaccination for Flu/Rhino
  • 300-365 days of age
  • · Deworm for all stages of encysted small strongyles.

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