What is "hippiatrica"

The Hippiatrica ( Greek: Ἱππιατρικά) is a Byzantine compilation of ancient Greek texts, mainly excerpts, dedicated to the care and healing of the horse. The texts were probably compiled in the 5th or 6th century AD by an unknown editor. Currently, the compilation is preserved in five recensions in twenty-two manuscripts (containing twenty-five copies) ranging in date from the 10th to the 16th century AD.