The pups are fed with early stage milk to supplement their mother's feed. Since there are 12 of them ( sorry cant help repeating that) we were advised by our Vet to supplement their milk intake. The milk (which is in a powder form and needs to be mixed in water) also came in handy immediately after the cesarean operation when Xena was hurting and unable to feed them for longer periods.
The milk was measured 2 oz or 50 ml and poured into regular feeding bottles. We gradually increased the feed each week.