Whole cow milk would be from the grocery store unless you have a source for cow milk. The milk replacer you buy in a bag and mix with water. There are only a few milk replacers that are good. Most are junk and have actually killed kids. I always buy whole milk so not sure which are the good milk replacers.
Yeah i use the whole milk too, i tried milk replacer once when it was my first bottle babies but they would have runny poop so i changed to whole milk and have used it ever since and they do great on it. i know someone who puts raw eggs in their bottles and their kids get huge.
The reason I am asking is because last year I was supposed to get a bottle baby and the lady ended up giving her to someone else and then they later sold her to me so I never got the chance to bottle feed and I had her cage set up and everything ready so I was disappointed and I really want to raise a Nigerian kid! I just want to make sure I have the time to feed them however often they need it