While you can raise cows in the game, their care is mostly about managing their environment and using the milking machine. The game doesn't simulate individual cow health or death from lack of food.
You can't directly feed cows in the game, but you can ensure their well-being by:
* Cleaning their stalls: Dirty stalls can lead to illness.
* Maintaining a good supply of hay: Cows will eat this automatically for their basic needs.
* Keeping them from getting too crowded: Too many cows in one area can make them unhappy and unproductive.
So, while you can't directly kill your cows by starving them, you can impact their well-being indirectly by neglecting their environment.