  The LHC data on the forward heavy flavour hadron production can be a new
unique source for estimation of intrinsic heavy quark contributions to the
proton. We discuss in detail the D-meson production in pp collisions at the LHC
including the intrinsic charm in the proton. We present also some predictions
for the K-meson production in the pp collision at the initial energies 158 GeV
and 7 TeV made within the perturbative QCD including the intrinsic strangeness
in the proton that can be verified in the NA61 experiment and at LHC.
