In the first part of this century, there was little advancement in horse nu
trition and little research was undertaken. However, in the last few years,
there has been a great increase in interest in this whole area. This revie
w surveys some of the more recent developments and how they have influenced
feeding practices and also compares these with those feeding practices fou
nd at the start of this century. The review concentrates on the nutrition o
f the adult horse in work, exploring in particular what they are fed and ho
w the nutrient Value of these feeds is evaluated.