Automatic selection of animals to be treated during a treatment period

A sorting system (200) for automatically selecting animals (10) to be treated during a desired treatment period comprising:

• an automatic sort gate (20) arranged to selectively sort animals (10) arriving from a milking area (30) into a sorting area (40) for performing a treatment,
• a control arrangement (100) configured to:
• i. receive, via a user interface (60), user input indicative of one or more sorting criteria applicable to one or more animal properties to determine whether an animal should be allowed to enter the sorting area to receive the treatment, receive user input on the desired treatment period, and receive user input on a maximum number of the animals allowed to be present simultaneously in the sorting area (40) during the desired treatment period,
• ii. monitor, continually during the desired treatment period, a number of animals (10) that enter and exit the sorting area (40),
• iii. adjust one or more parameter values of the one or more sorting criteria, based on the monitored number of animals that enter and exit the sorting area (40) during the desired treatment period, and the received user input on the maximum number of animals allowed to be present simultaneously in the sorting area during the desired treatment period, and
• iv. control the automatic sort gate (20) using the sorting criteria comprising the adjusted one or more parameter values.