TABLE-Bank Itaú BBA tops Brazil's M&A first-quarter rankings

April 1 (Reuters) - The following is a table with rankings for merger and acquisition activity in Brazil in the first quarter, as compiled by Thomson Reuters on Tuesday. Mergers and acquisitions activity in Brazil had an encouraging start to the year, as buyers took advantage of a weaker currency and cheaper valuations to clinch deals in Latin America's largest economy. Companies announced about $14.21 billion worth of deals in Brazil during the first quarter, up from $5.12 billion a y