How much milk does a holstein friesian cow produce a day?

Answer 1

Here is an article about a dairy farmer who says his Holsteins produce 10 gallons a day each:

http://hpj.com/archives/2007/jun07/jun18/Dairyfarmlonghourshardwork-.cfm

However, I suspect this is the high end of milk production and requires giving the cows hormones (BGH) to achieve those yields, because of the following description of a 1920s Holstein herd: http://content.cdlib.org/ark:/13030/tf109nb1qf/

It says, "High grade Holstein herd. F. E. Baxter Ranch. The production of these cows during the summer of 1921 averaged 80 gallons per day for 20 head." So, that would be 4 gallons a day per cow, during peak (summer) production back when BGH was not available. Of course, breeding has also probably increased milk productivity since then, as well.

Answer 2

Typically about 30 to 35 liters per day. Can be as high as 40 liters per day.