One option to increase / get back the messages from those pages is to visit each page again in facebook, and then click on the blue control field next to "Liked", and select "Add to Interest List"... and repeat that with all pages..
Or, you could click to a new page that facebook added to their system: it lists all content from the pages you subscribed to is listed, sorted by date and time:
- and creates a page that looks like this:
2 links with more background info:
- "Is Facebook “broken on purpose” to sell promoted posts? - Traffic from fan pages drops as new option to pay for reach appears."
- Facebook Adds Interest Lists: Here's How to Create and Use Them