(Adds Transneft, Akorn, Apple, Subsea 7; Updates CenterPoint Energy, Kroton Educacional)
April 23 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2000 GMT on Monday:
** U.S. gas and electric utility CenterPoint Energy said it would buy rival Vectren Corp for about $6 billion, the latest in a string of mergers in the sector as power consumption in many parts of the country flattens.
** Humana Inc is teaming up with two private equity firms to buy privately held Curo Health Services for about $1.4 billion, the group's second such deal in five months that will create the largest hospice operator in the United States.
** Brazil's largest for-profit education firm, Kroton Educacional SA has agreed to buy a controlling stake in rival Somos Educação SA for 4.6 billion reais ($1.34 billion) to increase basic education business.
** Henry Schein Inc said it would spin off its animal health business and merge it with Vets First Choice to create a new company that will form an animal health service and technology platform to support the veterinary market.
** German dialysis specialist Fresenius Medical Care is selling its majority shareholding in Sound Inpatient Physicians Holdings for $2.15 billion, it said on Saturday.
** Hedge fund Meditor Capital Management, already Carpetright's biggest shareholder, has raised its stake to just under the threshold at which it would be required to make a formal takeover offer for the struggling British retailer.
** Photo management platform SmugMug said on Friday it has agreed to buy image and video-hosting website Flickr for an undisclosed amount.
** Bahrain's Ahli United Bank said it has bought a 7.3 percent stake in Saudi Arabia's Islamic lender, Bank AlJazira, for $173 million.
** U.S. regional gas and electric utility CenterPoint Energy Inc is nearing a deal to acquire peer Vectren Corp , three people familiar with the matter said on Sunday.
** German healthcare group Fresenius SE said it had decided to pull out of its planned acquisition of Akorn after it found data integrity breaches at the U.S. generic drug maker.
** Abu Dhabi asset manager Invest AD said it has divested its 38 percent stake in Airport International Group (AIG), the developer and operator of Jordan's Queen Alia International Airport, for $230 million.
** Finnish drug maker Orion said on Saturday it has agreed to sell its Diagnostica division to a Nordic private equity company Axcel Management for 163 million euros ($200 million).
** Vietnam's Ho Chi Minh City Development Joint Stock Bank , better known as HDBank, said its shareholders approved on Saturday a plan to merge with the unlisted Petrolimex Group Commercial Joint Stock Bank as it seeks to expand operations in the country.
** Russian oil pipeline monopoly Transneft has rejected a proposal from its rival Summa Group to complete a deal to buy a Novorossiysk Commercial Sea Port (NCSP), a Transneft spokesman said on Monday.
** U.S. generic drugmaker Akorn <AKRX.O >is taking former suitor Fresenius to court after the German healthcare group cancelled their $4.75 billion takeover agreement.
** EU antitrust regulators opened an investigation into iPhone maker Apple's bid for British music discovery app Shazam, concerned that the deal may hurt competition.
** Offshore oil services firm Subsea 7 has made an unsolicited offer worth about $2 billion for U.S. rival McDermott, potentially breaking up the U.S. company's agreed deal with onshore engineering firm Chicago Bridge & Iron (CB&I).
Compiled by Akankshita Mukhopadhyay in Bengaluru