White – This would suggest to much bone in the last meal (if it’s a one off) or if it’s a regular thing then in the diet in general.
Runny – There are lots of reasons for runny poo. Initially your dog may be detoxing from it’s previous kibble diet, it may have picked up a bug or there may not be enough bone in their diet. If this happens regularly then it’s probably the latter and this needs to be addressed by adding more bone.
Your pets poo should be small, firm and far less smelly than it was previously when kibble fed. This is one of the many joys of raw feeding. Much easier to pick up and far more pleasant to deal with.