Sorry FW, I have no idea of the starch level in Pasture Cubes. I did however manage to get a few starch a sugar levels back last year of various feeds. If you fancy a nose, here it is
Give them a quick email and they should tell you the starch content - I asked about a couple of their feeds and they were very prompt getting back to me.
I do try and encourage people to ask these questions directly to the feed companies - hopefully if enough people ask they may actually put the figures on the bag and on their websites rather than using vague terms like 'low starch' and 'non-heating'.