Donkey colors do not equate directly with those of a horse and I am not seeing the term Liver show up on sites dedicated to donkey genetics. You mention liver and white but donkeys colors are based on body color, point color and trim color so the white may or may not refer to point color.
The black coat color of the appaloosa mare could be aaEe or aaEE. If the mare is aaEE she can only produce a non-red foal. How that will interact with the Jack's color is unknown however, the control of red and non-red in donkeys and horses is the same so if the mare is EE the foal's base coat color will be dark if she is Ee and Liver is a red based color there is a 50% chance that the foal will be red.
If the appaloosa mare is homozygous for the leopard complex gene (Lp) any foal produced will have
appaloosa spotting.

They all vary in size, just like any other breed. It also depends on the blood lines, but most are around 15.1 hands.

The Appy is 100% originated from USA. The Nez Pierce Indians are famous for breeding the Appaloosas. The Nez Pierce and were skilled hunters, trainers, and breeders. The Appaloosa is a famous breed in America.

Hope this helps somewhat.

Yes, barrel horses tend to be stock horse breeds and that includes the Appaloosa (American Appaloosa.) You'd want an Appy that was quick around turns and can properly rate it's speed.

the appaloosas enemie is a tiger or a nanaloo

true

Gravel paddocks are fine, especially for horses that are easy keepers or have metabolic issues and cannot have full access to grass. Sand turnout is better but not always doable. You must provide the horse with 24/7 hay and let them get out of the paddock for better exercise at least once a day., if you can provide a stall or shelter with soft bedding that will go a long way towards helping the horse find a comfortable place to lay down and even roll.
A good compromise is very fine gravel mixed with sand as this provides wear on the hooves, yet is more comfortable. Many people find it 'cruel' to keep a horse in anything but a pasture or stall, but this simply is not true, you must do what is best for the horse. If this means a gravel or sand paddock then it should be done, provided the horse has a way to exercise in a larger area for at least an hour a day.

It is not good for any horse to be on a gravel paddock for life. Apart from the fact that they need to eat little and often. (And therefore should be provided with some sort of grass supplement such as Hay or chaff at regular times). Gravel will not do their feet of legs any good. Although shoes with plates on can protect their feet, without this, the soles of their feet can become severely bruised and your horse may become footy and/or lame. The tendons can also be strained or pulled as the horse may spook or bolt in this paddock and could slip on gravel. Also you horse will not be able to roll comfortably and this will also effect their mood. In summary if at all possible horse's including Appaloosa's should not be kept in gravel paddocks for short periods of time let alone life.

The Appaloosa was the first horse breed to be acquired by the Nez Perce tribe around the 1700's leading to the tribe developing into excellent horsemen and breeders. Settlers began to refer to their horses as "a Palouse horse" in reference to the Palouse River in north Central Idaho. The term evolved from that to "Palousey", "Appalousey" and finally "Appaloosa". An Appaloosa Horse Club was chartered in 1938 and has become one of the leading equine breed registries in the world. The Appaloosa was named Idaho's state horse in 1975 because of its importance to Idaho history. Many of the settlers bred their horses with the appaloosa, almost causing it to go extinct.

Neither horse is better than the other. They are two different breeds developed for two different purposes, so comparing them would be pointless.

Palomino stallion --eeCrcr (unknown genetics at the agouti site)

Bay Leopard Appy mare A-E-LpLp (unknown zygousity at the agouti and extension sites)

The genetics of the mare at the agouti and extention sites and the agouti site of the stallion will determine the base color (bay, black, chestnut). Researching the colors of the parents and grandparents of the sire and dam may help determine the unknown genetic information at the agouti and extensions sites.

There is a 50% chance that the foal will be dilute.

The foal will have a high probability of having appaloosa characteristics.

Appaloosa's like all other horses drink water.

it depends, all horses have difftrent eating habbits

It all depends on the horse and how expeirenced the boy is. If the horse is really gentle and has no problems then i would say yes regardless of the the boys experience.

The Nez Perce, who originally bred the Appaloosa horse, were from mainly central Idaho, but also lived in northeastern Oregon, and southeastern Washington. So Idaho is where they're from.

The best-known Appaloosa registry/association is the Appaloosa Horse Club, or the ApHC.

I would think Hay and grass.

Its hard to really answer this question, its more of an opinion based one, therefore it all comes down to personal preference