  The axion quark nuggets introduced in \cite{zhitnitsky}-\cite{zhitnitsky13}
are a candidate for cold dark matter which, in addition, may be relevant in
baryogenesis scenarios. The present work studies their evolution till they
enter in the colour superconducting phase. This evolution was already
considered in \cite{zhitnitsky5}, where it is concluded that a large chemical
potential $\mu$ is induced on the bulk of the object. The baryon number
accumulated at the domain wall surrounding the object is taken as predominant
in \cite{zhitnitsky5}, and it is suggested that internal and external fluxes
are compensated and can be neglected. In the present work, the possibility that
the bulk contribution to the baryon number may be relevant at initial stages
and that the object may emit a large amount of neutrinos due to quark-antiquark
annihilations is taken into account. The outcome is a more violent contraction
of the object and, perhaps, a more effective cooling. Therefore, the resulting
objects may have a smaller size. Even taking into account these corrections, it
is concluded that the cosmological applications of these objects are not
spoiled. These applications are discussed along the text.
