Automatic milking system and a method of determining a health condition of an animal

An automatic milking system comprising:

• a control system comprising an electronic control unit (1),
• at least one milking station (2) configured to milk animals,
• a production milk tank (3) for receiving milk from the milking station (2),
• a second milk tank (4) configured to receive milk diverted from the milking station (2) and not conducted to the production milk tank (3),
• an animal identification system connected to the electronic control unit (1), the animal identification system configured to provide the electronic control unit (1) with individual identification information of animals milked by the automatic milking system,
• at least one first sensor (7) configured to measure at least one indicator of illness of an animal, said at least one first sensor being connected to the electronic control unit (1),
• a data memory (8) in which measurements performed by the at least one first sensor (7) on milk from individual animals identified by the animal identification system are gathered, wherein the time of each measurement is also registered and saved in the data memory (8), wherein,
• the electronic control unit (1) is configured to
• register a first point of time (t1) at which milk from an animal is diverted to the second milk tank instead of being conducted to the production milk tank (3), and,
• provided that the milk of the animal has been diverted from the milking station (2) to the second milk tank (4) for a plurality of consecutive milking sessions after the first point of time (t1), register a second point of time (t2) at which milk from the animal is shifted from being conducted to the second milk tank to being conducted to the production milk tank (3), and
• when the time period between the first point of time (t1) and the second point of time (t2) is within a predetermined number days, the electronic control unit (1) is configured to determine that the animal was in an illness state between the first point of time (t1) and the second point of time (t2).