Yes, human acidophiles is a great way to get the "good guys" into your goat (and you too ladies). While yogurt is good for goats, it will add good bacteria to the rumen, it is not enough to "cure" a "deficiency".
Friday I purchased probiotics for livestock at the feed store. I had tried probios and yogurt and a new goat I just purchased won't tough either. But I can sprinkle the livestock probiotic powder on the grain and she gobbles it right up.