  We study the temperature dependence of the specific heat in the periodic
Anderson model as function of the on-site Coulomb interaction, hybridization,
and position of the f-electrons energy level. At strong coupling (U=infinity)
we use slave bosons, whereas at weak coupling we use a simple Hartree-Fock
decomposition. We find that both in the strong and weak coupling limits the
specific heat of the system presents a multiple peak structure in a mean field
treatment. We believe these features to be related to band-shape effects. The
temperature evolution of the low-temperature peak position on the model
parameters for the non-half filled non-symmetric case is discussed.
