Analysts says the changes will speed up an expected new consolidation wave in the sector, and could attract investors as the cooperative banks will be forced to drop rules giving every shareholder one vote regardless of the size of the stake.

By 0819 GMT shares in Credito Valtellinese (>> Banca Piccolo Credito Valtellinese Sc) rose more than 6 percent, Banco Popolare (>> Banco Popolare Societa Cooperativa), Popolare Milano (>> Banca Popolare di Milano) and Popolare Emilia (>> Banca Popolare dell'Emilia Romagna Sc) were up more than 5 percent. Shares in Popolare Etruria (>> Banca Popolare dell Etruria e del Lzi Sc), which has long been looking for a merger with a stronger rival, rose 9 percent.

The decree, which has many political opponents, must be approved by parliament within 60 days.

(Reporting by Valentina Za, editing by Francesca Landini)