The implementing of equine husbandry techniques allows trainers to identify good horses and mares that can (and hopefully will) produce better-quality warhorses. Such methods can reduce the cost of shipping horses from an ally and, in this case, boost the speed of the horses.
The Burgundians, who apparently felt their horses were either fast enough or too heavily armoured to be able to move faster, as well as the Danes and Frisians, who generally disregarded cavalry except when necessary, do not receive this technology.
Cost: 250 food
Effect: Cavalry 10% faster