Petroleo Brasileiro S.A., or Petrobras (PBR) , announced first-quarter earnings per ADS of 75 cents, missing the Zacks Consensus Estimate of 84 cents. Earnings also came in well below the year-ago profit of 1.11.Theunderperformancecanbeblamedonrisingpre−saltliftingcoststhatresultedinweakupstreamprofitability,plushigherrefiningoutlay.Thiswaspartlyoffsetbystrongproduction.Recurringnetincome,whichstripsone−timeitems,cameinat4,816 million compared with $7,392 million a ye ...