How many days in a year does a cow give milk?

Just as any lactating mammal does, a cow produces milk continually until its calf is weaned - or in the case of dairy cows, the farmer continues to milk the cow after the calf no longer needs to nurse, so the cow's body is sort of “tricked” into thinking there is still a nursing calf to produce milk for. read more

After calving for the first time, a dairy cow will give milk for about ten months-or 305 days-followed by 60 days of rest, before it gives birth again. Farmers manage their herds so they have a consistent supply of milk for Thier market. read more

However a lone milk cow herself cannot milk for 365 days; her period is primarily between 185 to 305 days. This of course depends on each cow, for one cow may go longer than another before eventually drying up. read more

On a daily basis, most cows average about 70 lbs. of milk per day, or about 8 gallons per day. 8 gallons is about 128 glasses of milk per day. Interestingly, a herd of 800 cows can produce a large tanker truckload of milk each day. Over a year, that would be about 20 million lbs. of milk or 2.3 million gallons of milk. read more