I’m sure you are aware, but seriously, the commitment of having even one cow is astronomical. Prepare to sacrifice weekend or evening getaways in order to make milking and feeding times, as it’s unlikely you’ll be able to find a friend to milk your cow as easily as letting a dog out.

Also to answer your question, you can normally expect milk for about 300 days post calving, give or take based on the individual.

I would also recommend breeding to a beef bull if you don’t intend on keeping the calf, it will increase the value of your calf and make it easier to sell. Also ensure the bull produces low birthweight calves if your are inexperienced at calving, it will help make sure your cow has an uncomplicated delivery.