Biotechnology, farmers now have the ability to selective breed cows in order to strengthen milk production and longevity.
Yes, but for best milk production yearly breeding is advised.
You'd have to give birth to young first before you produce or leak milk.
Cattle eat grass and produce milk which feeds their calves.
Many reasons, meat,milk products,breeding, wool and many more reasons.
It could. It is a milk product and if you have a milk intolerance it could produce mucus.
Artificial Selection
Yes, goats produce milk, as all mammals do.
Selective breeding, the farmer will select what bulls to breed to what cows in order to increase milk production.
No, a doe goat cannot produce milk unless she has been bred and successfully given birth. Milk production in goats is triggered by the hormonal changes that occur during pregnancy and after delivery. Without breeding, a doe will not undergo these changes and therefore will not produce milk.
Only give Oxytocin when it's necessary, don't give it just because you can. You should really talk to your vet about this, and consider selling off the cow if she can't produce milk for her calf. You'll have to bottle-feed the calf yourself if Oxytocin won't be enough to help the cow give enough milk for her calf. So please, do your animals a favour and talk to your local large animal veterinarian.
Give her warm oatmeal with milk, puppy food, and occasionally a fried egg using only a very little of butter do not use oil or any other thing to fry the egg. This will help her produce more milk and make her recover faster.
This is called selective breeding or artificial selection, opposed to natural selection.