Nov 14 (Reuters) - U.S. index provider MSCI announced changes to a number of its index funds on Monday, adding 55 securities and removing 34 from its World Index .MIWD00000PUS .
The three largest additions measured by full company market capitalization will be Denmark's Dong Energy DENERG.CO , the United States' First Data Corporation A and France's Dassault Aviation AVMD.PA .
MSCI also announced changes to its emerging markets index .MSCIEF and added 44 new securities and deleted 3 from its China index.