By Chibuike Oguh (Reuters) -Apollo Global Management Inc reported a 13% rise in second-quarter earnings on Thursday, as income from its annuities provider Athene more than compensated for a decline in asset sales amid a slowdown in dealmaking. Apollo recorded an adjusted net income of $566 million in the three months to June 30, up from $501.8 million a year ago. This missed the average analyst estimate of $655.5 million of adjusted net income, according to Refinitiv data. Apollo said its principal investing income – which encompasses revenue from its flagship private equity funds – fell 93% t…