Poultry Manures (1.1-1.4-0.6) - are often simply chicken droppings mixed with the droppings of other domesticated birds including duck, pigeon, and turkey. They are "hotter" than most animal droppings, and in general they can be treated like chicken manure. Animal Manures vary by species, and also depending of how the animals are kept and manures are collected. Urine contains a large percentage of nitrogen and potassium. This means that animals boarded in a fashion where urine is absorbed with their feces (by straw or other similar bedding), can produce organic compost that is richer in nutrients.
Cattle Manure (0.6-0.2-0.5) - Steer manure is one of the old standbys, but it's not the most beloved because it often contains unwanted salts and weed seeds. It is considered "cold" manure since it is moister and less concentrated than most other animal manure. It breaks down and gives off nutrients fairly slowly. It can be an especially good source of beneficial bacteria, because of the complex bovine digestive system. Recent expansion in the use of bovine growth hormones to increase milk production certainly could become a concern for organic farmers trying to source safe cattle manures. The healthier the cow, and the healthier the cow's diet, the more nutrients its manure will carry.
Goat Manure (0.7-0.3-0.9) - can be treated in a similar fashion to sheep dung or horse manure. It is usually fairly dry and rich and is a "hot" manure (therefore best composted before use).
Horse Manure (0.7-0.3-0.6) - Horse manure is about half as rich as chicken manure, but richer in nitrogen than cow manure. And, like chicken droppings, it's considered "hot". Horse manure often contains a lot of weed seeds, which means it's a good idea to compost it using a hot composting method. Some sources of mushroom compost contain large quantities of horse manure and bedding in their mix. So from one standpoint, horses manure use in herb growing is already fairly well documented.