Black and White Holsteins.
The dairy cow.
Angus cattle are the most common of the beef breeds and Holstein cattle are the most common of the diary breeds.
Jersey
A cow. Or, if you want to go into specifics, a dairy cow.
The Holstein-Friesian, of course!
There really isn't anything else that is more profitable from a dairy cow other than selling the milk you get from her. Unless you sell her for meat, but then you won't ever get her back again, and will have to get a new dairy cow to replace her.
Dairy Cows are cows that can produce enough milk too be able to be milked.The following list is of some Dairy Cow breeds: (the most common breed is Holstein)AyrshireBrown SwissBusaCanadienneDairy ShorthornDutch BeltedEstonian RedFriesianGirolandoGuernseyHolsteinIllawarraIrish MoiledJerseyKerryLinebackMeuse Rhine IsselMilking DevonMontbéliardeNormandeNorwegian RedRandallSahiwal
holstein cows are known for their high quantity of milk production although other breeds of dairy cattle produce a higher quality or butter fat content than the holstein. the jersey cow is one example of milk cow that produced a lot of cream in the milk.
It gives more milk than what it would normally produce for its calf. That's what constitutes a cow for being a dairy cow.
Dairy
Most dairy cows are great nurse cows. Jerseys and Holsteins are one of the more common nurse cows that can be used on beef operations to raise orphaned calves on.
That all depends on the breed. Are you asking about a dairy cow or a beef cow, and what breed of dairy or beef cow?