Avoid if at all possible my success rate is very poor, they just dont survive. I have tried SMA baby milk and you can also buy special powdered milk from some pet shops and the vet. The text books advise 2 hourly feeds but I found they didnt want feeding this regularly and wouldnt take the milk.
Hand-rearing is hard work but can be rewarding if the young live. I had to rear 1 litter after their mother was killed but they were 2½ weeks old so had a fairly good start in life.
If you are lucky enough to have another doe with a new litter then you may be able to get her to adopt them. See Surrogacy.