Does anybody know of an online resource for "horse care requirements"

I'm trying to research online about what different states have set as "requirements" for horses. Basically what they base whether or not an animal gets confiscated or a stable gets closed down for not providing adequate care... Mainly for Nebraska. I know they have to have a shelter, and they have to have adequate feed but I want to find out what the water requirements are, especially for boarding facilities.

If anybody knows where I can find such information, please let me know.

I'm thinking you may have to go state by state under their agriculture laws. State horse councils may have it as well. Here are the Kansas ones to save some time. I remember checking them when we had to bury a horse. Kansas Animal Health Department
Its pretty much up to the state to regulate animal cruelty. Unfortunately, horses are considered livestock in most states so they don't fall under many of the anti-cruelty protections.
You might also try contacting the Humane Society of America. They may have that information already available all in one place.
The Humane Society of the United States : The Humane Society of the United States
Here is another link for KS http://www.kansas.gov/kahd/laws/afip.shtml