Energy dependence of hyperon production from NA49

Recent results on hyperon production in central Pb+Pb Collisions at 20, 30,
40, 80 and 158 GeV obtained by NA49 at the CERN-SPS will be presented and
compared to the results at lower (AGS) and higher (RHIC) energies.

The results will be compared to the predictions of models which do not
assume deconfinement phase transition, like string hadronic models and
hadron gas model.
    
Finally their relation to the hypothesis of the onset of deconfinement at
low SPS energies will be discussed.