This section is from the book "The Farmers Ready Reference Or Hand Book Of Diseases Of Horses And Cattle", by S. C. Orr. . Also available from Amazon: The Farmer's Ready Reference;.
The foal should not be disturbed until it has had time to get dry and become accustomed to its new life, and it will generally get up and try to suck. If it should not be able to stand after an hour or two, a little assistance may be given. The first milk of the dam when taken freely has a medicinal effect in cleansing the little fellow's bowels; but if no passage is seen by the end of twenty-four hours, inject into the rectum a tablespoonful of glycerine, repeating it every fifteen minutes until there is a full passage. We have saved life with injections of glycerine when the colt would not have lived long enough for a dose of oil to operate. It can be repeated every day until a regular action of the bowels is established.
In case it becomes necessary to feed a young colt by hand, only new milk from a cow lately fresh should be used, and as the milk of the cow is not as sweet as that of the mare, a little sugar should be added.