  We illustrate the cosmological Friedmann-Robertson-Walker (FRW) models
realized as gauge theory in the extended configuration space with its
Becchi-Rouet-Stora-Tyutin (BRST) invariance upto total derivative. To
investigate the model in Batalin-Vilkovisky (BV) formalism the Lagrangian
density of the models is further extended by introducing shifted fields
corresponding to all fields. The extended Lagrangian density having shifted
fields admits more general BRST symmetry (including shift symmetry), called as
extended BRST symmetry. In this framework the antighost fields corresponding to
the shift symmetry get identified with antifields of BV formulation. Further,
we analyse the models on supermanifold with the help of additional super
(Grassmannian) coordinate $\theta$. Remarkably, we observe that the $\theta$
components of superfields produces the gauge-fixing term in tandem with ghost
term of the effective Lagrangian density naturally. Furthermore, we show that
the quantum master equation of the BV quantization method can be translated to
have a superfield structure for the FRW models.
