Get Pet Questions Answered by Pet Experts
The mother will only have colostrum for the first 48 hours or so. Because of this, you may not see milk right away.
You should try to entice the foal to nurse as much as possible and keep an eye on mom and baby for the next few days. If the baby is not thriving within 48 hours, you need to call your equine vet. If the foal becomes listless or lethargic before that, you will need to call him sooner.
Let me know if you still have questions.
I'm sure that there is but I'm not familiar with brands or with bottle feeding of horses.
I bet that if you give mom some time, everything will be just fine. It's rare for a healthy mom to not have milk. I could understand it if the mom was underweight or unhealthy but a healthy horse should have no problem. Nature steps in and fixes any mistakes that she makes.