A cow will typically eat 2.5% of her body weight of ration DM per day. As to what to feed her, hay, silage, grass and a little grain is the main rations to consider feeding a cow. When a cow is on pasture, she usually doesn't need any other supplementation except a bit of mineral.
how your cow and goats eat
It should only be a matter of a couple hours.
It should be served in a huge trough with many different types of food in it, like a buffet for cows.
6cups.of grass
Enough to fill a cow!!
cow food is probelly bwteween 50 to like 200 well were i live its
The same amount as a cow.
To help a cow with constipation you can give the cow one or two teaspoons of mineral oil. This should be enough to help the cow.
Cow's milk
milk
Breed her and wait around 285 days until she gives birth to a calf.
Typically a cow with Johne's Disease (which is a disease where a cow has chronic diarrhea) is considered safe to be slaughtered for food.