My horse finally had her foals and i was wondering what they will need to stay healthy

make sure it is  healthy

Explanation:

Have a bottle or a lamb nipple and bottle handy, along with a clean stainless-steel receptacle to milk out the mare, and be prepared to start supplementation if nursing is delayed and a strong suckle response is present. Never force feed or syringe a foal that does not suckle as the foal can aspirate the milk and develop pneumonia. The bottle should be offered at head height, not above. A healthy 90-pound foal can drink about 8 ounces of colostrum at a time and needs a minimum of 16 ounces of high-quality colostrum orally to confer immunity in a clean environment. The higher the pathogen load in the environment, the higher the IgG level needs to be for protection.

Newborn foals should be carefully monitored over the first days, as even those that appear normal and healthy at birth can develop problems very quickly.

If the foal displays lethargy or excessive sleepiness, a distended abdomen and failure to pass urine within 8 hours, a jaundiced appearance, diarrhea combined with depression, any lameness or limb swelling, or swelling or drainage of the umbilicus, seek immediate veterinary care.

REAL FACTS

obviously, the latter.