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The axion quark nuggets introduced in \cite{zhitnitsky}-\cite{zhitnitsky13}are a candidate for cold dark matter which, in addition, may be relevant inbaryogenesis scenarios. The present work studies their evolution till theyenter in the colour superconducting phase. This evolution was alreadyconsidered in \cite{zhitnitsky5}, where it is concluded that a large chemicalpotential $\mu$ is induced on the bulk of the object. The baryon numberaccumulated at the domain wall surrounding the object is taken as predominantin \cite{zhitnitsky5}, and it is suggested that internal and external fluxesare compensated and can be neglected. In the present work, the possibility thatthe bulk contribution to the baryon number may be relevant at initial stagesand that the object may emit a large amount of neutrinos due to quark-antiquarkannihilations is taken into account. The outcome is a more violent contractionof the object and, perhaps, a more effective cooling. Therefore, the resultingobjects may have a smaller size. Even taking into account these corrections, itis concluded that the cosmological applications of these objects are notspoiled. These applications are discussed along the text.

Neutrino emission and initial evolution of axionic quark nuggets