I am not familiar with goat-milk-replacer. If possible, compare the ingredients listed on the label, along with the protein and fat percentages.
Ideally the calf should be fed a cow-milk-replacer. 20% protein 20% fat. Most importantly made from real milk products, not soy. The better replacer costs more, but is better for them, and yields better results.
My replacer of choice is "Cow's Match" made by Land-O-Lakes.
Katherine