Incredible How Much Does A Dairy Cow Eat Every Day References. Dairy cows are like athletes and do a great job converting feed into the energy they need for. A 400 kg cow will require 12 to 16 kg of dry matter in a day.

An average cow can produce around 21,000 pounds of milk each year, which is almost 2,500 gallons. A lactating cow should drink 30 to 40 gallons day. About 100 grams or 0.35 to 0.4 percent of ration dry matter.




