> Wait until it is done weaning to start using it's mother's milk.
Then what happens to the calf? They raise it to the end of it's natural lifespan as a pet? Are male and female calves treated differently?
> Most Dairy cows don't need to have a calf to produce milk.
I can't find anything to corroborate this. Every source I find on the topic says dairy cows produce milk for up to about one year after giving birth, then they need to be re-impregnated to begin producing milk again. Do you have a source for this claim?