
You can either introduce a puppy porridge, or the puppy kibble (both of these will have all the protein and nutrients that are required) that you intend to use for them as White Lilly has posted, or you can buy a suitable puppy milk supplement and bottle feed, or you can combine both. Or alternatively let mum feed them and supplement with a suitable puppy porridge or puppy kibble (both must be very sloppy otherwise it will stick in their throats). I always recommend a puppy milk supplement rather than goats milk, as the protein content of goats milk is too low for the canine puppy, and is nowhere as high as a bitches milk. The growth rate of a puppy is tremendous and they need a suitable food that will accommodate this growth. Goat kids are large at birth and the growth is nowhere near as much as a puppy, if that makes sense.
I always begin weaning at about 14 days normally (large breed), although they still take mothers milk.
Should add that I do not begin weaning onto solids until their eyes are open and they are standing, if there are not doing this then supplement with a bottle and a puppy milk, it will be easier and quicker.