  We study the effects of Supernova (SN) feedback on the formation of galaxies
using hydrodynamical simulations in a Lambda-CDM cosmology. We use an extended
version of the code GADGET-2 which includes chemical enrichment and energy
feedback by Type II and Type Ia SN, metal-dependent cooling and a multiphase
model for the gas component. We focus on the effects of SN feedback on the star
formation process, galaxy morphology, evolution of the specific angular
momentum and chemical properties. We find that SN feedback plays a fundamental
role in galaxy evolution, producing a self-regulated cycle for star formation,
preventing the early consumption of gas and allowing disks to form at late
times. The SN feedback model is able to reproduce the expected dependence on
virial mass, with less massive systems being more strongly affected.
