they like long dead brown colour grass like hay
Cows will eat long grass. Haven't you ever heard, "The cow's in the corn?" Corn is a tall grass.
Grass
No. Milk is milk and comes directly from mammals like cows.
Grass and grain, just like all other cows.
grass
It'll take one cow nine days.
It will feed 20 cows in 80 days.
Yes, and No. Cows can survive completely on grass as food, but it would need water too.
No. Cows are herbivores, not omnivores or carnivores, which means they eat plants like grass, not animals like tuna.
Cows
cow are vegetarians, grass,sugar, highproteins
No. Cows EAT grass. They do not "have" grass.