What is the Islamic legal ruling on a female dog nursing young goats?

Scholars have differed regarding feeding impure substances to edible animals, but an animal that feeds on impure substances (Al-Jalalah) has meat and milk that are forbidden until it is confined and fed pure food for a sufficient period for the effect of the impurity to dissipate. If these sheep are prevented from drinking impure milk and are fed pure food until the effect of the impurity disappears from them, then their meat is permissible.