An apparatus for farming animals, with a trough, a distributing system, an identifying system, a database and a control unit that allows, once an animal has been identified, the time passed ‘t’ since the time T0 corresponding to the last feed of said animal to be measured, a new value of the credit feed weight MC to be computed with the formula MC ⁡ ( t ) = M ⁢ P Δ ⁢ T * ( t - T 0 ) + M ⁢ C 0 and a succession of feed portions to be distributed to the trough until the animal is sated or until a zero or negative credit feed weight MC is obtained.