A management system for managing animals on a dairy farm includes a receiving element (12) provided for receiving, for each of the animals, a value of a protein content and a value of a fat content of milk from the animal as milked on the dairy farm a calculating element (19) provided for calculating, for each of the animals, the ratio of the values of the protein and fat contents of milk from the animal a comparison element (20) provided for fetching, for each of the animals, from a database (18) a reference protein/fat ratio, and for comparing the calculated protein/fat ratio with the reference protein/fat ratio and a notifying element (21-23), preferably a display unit (21) or a loudspeaker (22), provided for notifying, for each of the animals, a dairy farmer (24) of the dairy farm depending on the outcome of the comparison.
