Is the Minstrel song 'Turkey in the Straw' the song whistled by the mouse in 'Steamboat Willie'?

Apparently, the famous scene of the mouse whistling on the boat in the black-and-white footage of 'SteamBoat Willie', shows the mouse whistling the minstrel song 'turkey in the straw'? or maybe not, i'm not so sure.. perhaps Turkey in the Straw is played during the end credits of Steamboat willie? really don't know but according to Wiki, the song was first played in steamboat willie.. does anyone know ?? plz