They don't and they shouldn't. The cows themselves tend to like to taste or eat anything that gets their curiousity, and it ends up getting swallowed. A magnet bolus has to be plunged into the cow's reticulum to collect all that metal that the cow has swallowed so that it all doesn't puncture the stomach wall and cause a lot of pain and infection for the animal.
calcium
so that farmers can watch the food digest inside the cows stomach and make foods that digest easier.
They are called that because they have a four part stomach.
because farmers raised hogs and dairy cows
The hormone that is injected into dairy cows for increased growth and milk production is called recombinant Bovine Somatotrophin Hormone or rBST, purchased as Posilac by American dairy farmers.
No. Dairy cows have much larger udders than beef cows do. A dairy cow has been selected to produce more milk than what she can feed her calf to meet the farmers' demands for more milk to be produced per cow per day.
I am sure that you could, but dairy cows are more valuable to farmers for the milk they produce, not their meat.
The milk that goes down the drain is milk that has been collected from cows that have mastitis. Cows with mastitis cannot have their milk mixed with the milk of cows that do not have mastitis.
fun facts about dairy cows
Angus cows are beef cows, not dairy cows. Holsteins are dairy cows, not beef cows, which is where we get the majority of our milk from.
BST, through the Elanco Animal Health label Posilac, is given to dairy cows subcutaneously, one injection every fourteen days during the cow's period of lactation. See the related link below.
You don't have to have dairy cows if you are not wanting to make money off of producing milk or want to have milk for yourself and your family. The only time you have to have dairy cows is if you are getting into a dairy operation.