Waste milk is a common source of nutrients for preweaned calves. Because the composition of waste milk varies, many producers utilize calf milk replacer to increase the nutrient content. However, if you supplement waste milk with calf milk replacer you may be over-providing some nutrients and under-providing others. 

Proper supplementation requires a more sophisticated nutritional approach than simply adding commercial milk replacer to waste milk.

Supplementing waste milk is discussed in-depth in Calf Note #148. View the issue.