Cows and goats need to be fed on grass and oilseed cakes because grass and oilseed cakes are milk producing food so these help them to produce milk
Yes, and No. Cows can survive completely on grass as food, but it would need water too.
It would be a pretty poor world without milk cheesy and butter from cows. Oxen to draw a plough, horses to carry loads and goats and chickens for milk and eggs. You would need cows goats Ox horses chickens basically u need all animals
Yes, I have a pigmy goat and he love cabbage. Actually, he loves anything green, Goats like cows need roughage to help maintain a healthy digestive tract.
Energy and protein. Cows need the energy for their bodies to produce milk and to keep them healthy. They are able to digest grass in their rumens to get the protein and energy for them that can be found in milk.
Cows do not eat corn in their natuaral diet. They eat grass. Cows are being fed corn because it is cheap and plentiful. Because corn is not a natural food for cows, they need help digesting it and are fed antibiotics to keep their digestion healthy.
Cows need a nose to breathe. They eat a lot of grass with their mouths so they use their nose to breathe.
Sheep are small animals and don't need a lot of forage or additional feed to produce meat. They can graze on small areas of grass or brush. Goats are also popular for the same reason. Cows are large animals that need lots of grass from large pastures and supplemental feed to produce meat. Also, lamb tastes good (at least better than goat meat).
cows eat grass they don't get a lot of nutrients. They need to ferment the grass in multiple levels of their stomachs to get the most out of it.
An acre of grass can typically support up to 2-4 goats, depending on the quality and quantity of the grass, as well as the size and breed of the goats. It's recommended to have at least 1/4 to 1/2 acre of pasture per goat for grazing and to prevent overgrazing. Therefore, for 1-4 goats, you would ideally need 1/4 to 2 acres of grassland.
They keep the grass down without the farmer having to turn on a tractor and hook up a mower to mow the grass him or herself. While he or she's got cows eating the grass, the farmer can be free to do other things that need to be done. Plus the grass benefits from the grazing cows, enabling the grass to grow more healthier when it is being grazed; the feces and urine from the cows also aid in grass growth. The deposition of manure leaves the farmer one less job to do as well; he/she doesn't need to spread manure that would've otherwise accumulated in the drylot if he/she had to feed the cows in a drylot instead of having them get their on food out on the pasture.
None. Cows may need grazing area but an area does not need cows!
You need to be more specific -- which farm animals are you referring to? Cows, pigs, chickens, geese, horses, goats??