Depends on what horses you're referring to.
Geldings have already been gelded: They are castrated male horses, which means their testes have already been removed. To "geld" is to castrate a male horse like a stallion or colt. Thus, geldings do not need to be castrated because they have already had the surgery done on them earlier in their lives. Horses (more specifically stallions or colts) can be gelded at any age but most are gelded when they are around yearlings or two-year olds, usually right after their testicles drop, or before they reach sexual maturity. However it's not uncommon to have stallions gelded after reaching sexual maturity, especially if they are no longer needed for breeding purposes, or even to calm the horse down, since stallions are more difficult to handle due to hormones than mares or geldings.
Colts (boys) can even before 1yr old which is why they must be gelded (castrated)
Foals Boys are colts (they become stallions and are often gelded) and girls are fillys (become mares)
A stallion is a fully grown male horse (over 4 years old, before that age he is called a colt) who has not been castrated. A male horse that has been castrated is called a gelding, and most male horses are gelded because stallions are often unpredictable and moody. Most stallions are only left intact (not gelded) because they are wanted for breeding. There is no other reason to leave a horse entire.
An alpaca is gelded in much the same way a horse is gelded - via local anesthetic and surgical removal of the testicles from the scrotum.
hay is the typical diet for horses along with grass and grain...
Female horses cannot be gelded, only stallions can (thus, "gelding"). They are called "mares" and their reproductive organs are not removed.
Rockstardom Has sadly been gelded :(((
Yes, you will need to remove your fentenyl patch before any type of general anesthesia.
the correct term qould be gelded the correct term qould be gelded
Definately not. All male horses are born stallions, and gelded when around 2-4 Gelding is when a male horses testicles are surgically altered so that he cannot mate anymore. So, no, a horse can't be born as a gelding.