A device (1) for determining the mass flow rate of milk turbulently flowing with air in a pipe (2) in pulsed milk slugs comprises sampling a signal from a microphone (8) of the device (1) indicative of sonic signals produced by the milk flow. The sampled signals are read by a microprocessor (15) which applies a Fast Fourier Transform to the sampled signal to produce the frequency domain of the sampled signal. The microprocessor (15) is configured to compute the average energy value of the sampled signal in the frequency bandwidth of 6 kHz to 15 kHz during consecutive monitoring periods. The average energy values are inserted into a calibration equation, which may be a power law equation, a polynomial equation, a logarithmic equation or any other such suitable equation in order to convert the average energy value to a mass flow rate of the milk flowing through the pipe 2 during that predefined monitoring period. The total mass flow of milk flowing through the pipeline (2) during a period from T.sub.1 to T.sub.2 is determined by integrating the determined mass flow rate of the milk from the time T.sub.1 to the time T.sub.2. Disengagement of a milking cluster from the teats of an animal as a result of kick-off during milking is also determined when the monitored signal from the microphone (8) transitions from the signal indicative of milk flowing in pulsed slugs to a continuous relatively high energy noise signal indicative of air being continuously drawn through the pipeline.

A method, and milking system, for managing a herd of dairy animals including N groups, wherein N2, and the method includes: A) determining a content of a substance in the milk for a group of dairy animals, and B) performing an animal-related operation for the group, based on the content of the determined substance.

A method, and milking system, for managing a herd of dairy animals including N groups, wherein N2, and the method includes: A) determining a content of a substance in the milk for a group of dairy animals, and B) performing an animal-related operation for the group, based on the content of the determined substance.

A system for storing and cooling milk includes a cooling tank to store milk, a first sensor monitoring the filling level of milk in the cooling tank, and a cooling system cooling the milk in the cooling tank including a cooling device, a second sensor, and a control device. The cooling device includes an evaporator, a varying-capacity modulated scroll compressor connected with its suction side to the evaporator, a condenser connected to the high pressure side of the compressor, and an expansion valve interconnected between the condenser and the evaporator. The second sensor monitors a parameter indicative of the pressure at the suction side of the compressor. The control device is operatively connected to the first sensor to receive the monitored filling level, the second sensor to receive the monitored parameter, and the compressor to control the capacity thereof in response to the monitored filling level and the monitored parameter.

A method for cooling milk in a milking arrangement, and a milk cooling apparatus of the milking arrangement that has a coolant circuit for heat exchange between milk and a coolant and a refrigerant circuit for heat exchange between a refrigerant and the coolant, where the method includes controlling the refrigerant circuit to maintain a predefined temperature range, receiving a first signal relating to commencement or increase of a milk flow from a milking system of the milking arrangement, starting or increasing circulation of coolant in the coolant circuit, and leading the milk flow through the milk cooling apparatus.

A milking system for milking a dairy animal includes a milking cup and a measuring chamber which is in flow communication with the milking cup for the obtained milk where the chamber has a sensor system for measuring at least one property of the milk. The sensor system includes at least three optical sensor devices, each configured to measure values of a property of the milk, and a sensor control unit for actuating the sensor system and for processing the measured values. The sensor control unit is configured to repeatedly select one of the sensor devices. Two of the optical sensor devices are identical, and the sensor system is configured to in each case measure the local value of the property of the milk and to determine a value of the at least one property of the milk in the measuring chamber on the basis of the values measured locally.

A milking system for milking a dairy animal includes a milking cup and a measuring chamber which is in flow communication with the milking cup for the obtained milk where the chamber has a sensor system for measuring at least one property of the milk. The sensor system includes at least three optical sensor devices, each configured to measure values of a property of the milk, and a sensor control unit for actuating the sensor system and for processing the measured values. The sensor control unit is configured to repeatedly select one of the sensor devices. Two of the optical sensor devices are identical, and the sensor system is configured to in each case measure the local value of the property of the milk and to determine a value of the at least one property of the milk in the measuring chamber on the basis of the values measured locally.

A quality sensor that predicts a degree of inhomogeneities in milk extracted from an animal, by receiving a set of input variables reflecting at least one characteristic each of the animal, the extracted milk, and at least process during which milk was extracted from the animal, and by feeding the input variables into a trained artificial neural network in the quality sensor, which generates an estimate of a predicted degree of inhomogeneities in the milk of the animal.

A quality sensor that predicts a degree of inhomogeneities in milk extracted from an animal, by receiving a set of input variables reflecting at least one characteristic each of the animal, the extracted milk, and at least process during which milk was extracted from the animal, and by feeding the input variables into a trained artificial neural network in the quality sensor, which generates an estimate of a predicted degree of inhomogeneities in the milk of the animal.

In a headlock system having a plurality of n headlock cells, each of the n cells being adapted to enclose at least one animal; n is an integer greater than 1; a system for locating the position of at least one animal, the system comprising: at least one identification means adapted to transmit at least one identification signal associated with said at least one animal; at least one locating means adapted to generate at least one location signal associated with said at least one animal; and, a data processing system in communication with said at least one identification means and said at least one locating means, adapted to analyze said signals, said analyzed signals comprising the position within a predetermined region in said headlock system of each of said at least one animals as a function of time.