Health Across a Horse's Life — HorseVeterinarian.AI

The Right Care at the Right Time Makes the Difference

A foal needs colostrum within 12 hours of birth or risks life-threatening immune failure. A horse over 15 almost certainly benefits from annual ACTH testing to screen for Cushing's disease. A young horse's growth plates need protection from premature athletic loading. A pregnant mare needs EHV vaccination timed precisely to maximize colostrum antibody transfer.

These are not generic horse care recommendations — they are life-stage-specific priorities that change meaningfully as a horse ages. The guides below cover what matters most at each stage and what to discuss with your veterinarian.

Health Guides by Life Stage

🐴 Birth to Weaning

Foal Health

The first 24 hours of a foal's life are the most medically significant. Colostrum must be ingested within 12–18 hours or Failure of Passive Transfer (FPT) leaves the foal with no immune protection. The 1-2-3 rule: 1 hour to stand, 2 hours to nurse, call the vet if not nursing by 3 hours. Neonatal vaccination timing, Parascaris management, joint ill prevention, and meconium passage are all first-week priorities.

Critical First 24hrsFPT RiskVaccination Timing

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🐎 Weaning to 4 Years

Young Horse Health

The developing equine skeleton is vulnerable to osteochondrosis (OCD) — abnormal cartilage development producing joint lesions that may require surgery. Nutrition, genetics, exercise, and growth rate all influence OCD risk. Dental development is extensive from weaning through age 5 — exams every 6 months catch retained caps and wolf teeth issues before they affect training. Growth plate closure timing determines when serious work can safely begin.

OCD RiskDental Every 6moGrowth Plates

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🌟 15+ Years

Senior Horse Health

Annual ACTH testing for Cushing's disease (PPID) is the single most impactful proactive health step for horses over 15 — PPID affects 20%+ of this age group and is highly manageable when caught early. Dental surfaces wear progressively, requiring diet adjustments and more frequent exams. Joint management, weight maintenance, immune changes, and quality of life assessment all become increasingly important considerations.

PPID Testing CriticalBiannual VetDental Every 6mo

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🐴 Reproductive Health

Breeding Mare Health

Pre-breeding examination — including vulvar conformation assessment, uterine culture, and follicle monitoring — maximizes conception rates and pregnancy success. EHV-1 vaccination at months 5, 7, and 9 reduces abortion risk. Core vaccines 4–6 weeks before foaling maximize antibody transfer to the foal through colostrum. Retained placenta after foaling is a time-sensitive emergency requiring immediate veterinary attention.

Pre-Breeding ExamEHV Timing CriticalRetained Placenta Urgent

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🐎 Breeding Soundness

Stallion Health

Annual Breeding Soundness Examination (BSE) 4–6 weeks before the breeding season evaluates semen quality, libido, and physical health. Systemic illness reduces semen quality for 6–8 weeks after recovery — illness in November affects the February breeding season. Current Coggins test is required for breeding at most facilities and for interstate travel. Penile hygiene and breeding book management are ongoing considerations.

Annual BSECoggins RequiredIllness Impact

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Life Stage Health Priorities at a Glance

Topic	Key Point	Action
Neonatal foal (0–7 days)	IgG testing at 18–24 hrs; navel dipping; meconium passage monitoring	Schedule vet exam at 12–24 hours of age
Foal (1–6 months)	Primary vaccination series begins at 4–6 months; Parascaris deworming	Discuss with vet based on mare vaccination status
Weanling–2 years	OCD radiograph survey in high-risk breeds; dental exams every 6 months	Nutritional balance; avoid over-supplementation
2–4 years	Growth plate closure timing; beginning training workload	Graduated conditioning; pre-training soundness eval
Adult horse (5–14)	Annual vaccinations, FEC-based deworming, dental exam, wellness visit	Coggins for travel; ACTH if any signs
15+ years	Annual ACTH testing (PPID screen); biannual dental; biannual vet exam	Weight monitoring monthly; joint management discussion
Pregnant mare	EHV at 5/7/9 months; core vaccines 4–6 wks before foaling	Pre-breeding exam; colostrum quality test pre-foaling
Stallion	Annual pre-season BSE; current Coggins; penile hygiene	Illness 6–8 weeks before season = semen quality risk

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HorseVeterinarian.AI is a free educational resource from Bridle & Bit Magazine. Your horse's life-stage health plan is a conversation best had with a veterinarian who knows your horse.

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