602500 Disclosed is a milking system for analysing the milk of multiple animals during milking. The system is comprised of a common milk line (4) connected to a milk storage tank (7) at least two milking stations (1a-c) connected to the common milk line (4) a computer (9) for storing milk quality information and animal identity data and means for controlling (also provided by computer 9) the transfer of milk in the common milk line (4). Each milking station (1a-c) is adapted to automatically identify an animal, automatically extract milk from the animal and automatically transfer the milk in the common milk line (4) from the milking station (1a-c) to the milk storage tank (7). The milk constituent analysing unit (5) is arranged to analyse milk from the common milk line (4) with respect to a specific constituent. The means for controlling (9) the transfer of milk in the common milk line (4) is arranged to allow only one of the milking stations (1a-c) at a time to transfer milk in the common milk line (4). The milking stations (1a-c), the computer (9) and the milk constituent analysing unit (5) are communicatively connected to allow the result of the analysis of the milk with respect to the specific constituent to be associated with the identity of the animal or the identities of the animals from which the milk was extracted.