This system measures and evaluates the activity of cows and heifers. It indicates the heat of animals, but also health problems. The receivers (antennas) are installed in the barn, monitor the activity of animals and transmit the information to the computer. The activity is measured by an electronic device placed on the neck or the leg of the animal.
The data are updated once per hour, and for heat detection there are used also other informations (e.g. date of previous heat, date of calving, visits in the feeding station, changes of the milk conductivity and the milk yield).