Yes. Any dairy cow that is culled from the herd as being non-productive is slaughtered for meat. Some cows that die on the farm don't make it as far as the meat factory, rather they get buried in the "dead pile" or "dead pit" or whatever it's called and decompose back into soil.
No. Holsteins are also slaughtered for beef, especially when they're no longer productive. Bull calves are also raised as veal calves. Most of the hamburger and veal meat come from dairy cattle that include not just Holsteins, but Jerseys, and Brown Swiss as well.
Jersey bull calves are slaughtered for veal. Jersey cows, when they're too old to be productive any more or are culled for productivity reasons, are slaughtered for beef, which is often made into ground beef for hamburger and such. Ultimately, though, Jerseys are not used for meat, but for dairy or milk production.
because cows have a healthier milk
"Fat cows are used for meat. In fact, fat cows will bring a premium price at market because of the high density and quality of marbeling of the meat that is obtained from fat cows. Lean cows produce tough meat that is lacking in fat, and fat cows are much preferred."
Veal does not come from any part of a cow. Veal is the meat from dairy bull calves that are not needed in dairy production and are sent either for slaughter or to be fed a special feed prior to slaughter.
Well cows can be used for dairy to make a farm busness
The magnificent creature, the cow is known for produces it's manure. Manure can be used for growing plants, or grounded up into mulch or wood-chips. They also are used for dairy products. Such as milk, cheese, yogurt. In some farming experiences, cows are used for meat. Their thick meat is used for a variety of meals.
they have lots of vitamin
Jerseys are mainly used for milk (dairy) production.
There is no "medicine" that is used for dairy cows to increase milk production. Only a particular growth hormone called rBGH or recominant Bovine Growth Hormone.
Not only for milk production, but dairy cows are also good grazers, enough to eat down a pasture or field, and their manure is also great for use on gardens, flower beds and fields used for crop production. Dairy cows also produce calves, which can either be used as replacements, or the bulls can be raised for meat. Some people like to buy a bull calf or two, castrate it, then raise it for beef (not veal), slaughtering it when it is around 2 years of age.
Other than milk (which is made into dairy products by humans), spent or cull cows are sold and slaughtered for meat (most often ground beef and sausage), skin used for leather, and organs used for other edible and inedible products. On the dairy farm itself, manure (often in liquid form) is used as fertilizer for the farm's fields. A few farms use the manure to produce methane which is used to power the farm's barns, facilities and even house.