This object enables feed tracking on the Asset object.
For more details about objects' Feed, go to AccountFeed object.
Enable feed tracking on Setup > Chatter > Feed Tracking:
And this is an Asset with feed tracking enabled:
Here is a simple query:
SELECT id, Type, Title, Body, Visibility, likecount, NetworkScope, (Select Id, FieldName, NewValue From FeedTrackedChanges) from AssetFeed