What looks like acidosis but isn't?

[EmsoffLambs]

My ram is severely lame on all four feet and completely off feed. Not drinking much either and nose is really dry. No fever. This started yesterday morning with milder lameness and barely picking at his feed, but has gotten worse tonight to the point that he doesn't want to get up and when I make him, he hobbles around in pain and lays back down. No scours, no real feces of any kind. I did increase his grain slightly before this happen, from 1 lb to 1 1/2 lb, which I didn't think would be enough to cause this severe of a reaction. I treated him tonight with banamine and penicillin and started drenching him with electrolytes to keep him hydrated.

I just don't know if this is acidosis or something else entirely. Does anyone know anything else that can cause severe lameness all the way around and totally off feed?

[Don Drewry]

I'd check the feet for lesions real carefully, given the past cases of blue tongue, that is one possible cause. 
See this site, http://www.nadis.org.uk/bulletins/bluetongue-in-cattle-and-sheep.aspx

[EmsoffLambs]

I sure hope it is not bluetongue. Last year every sheep affected with bluetongue had a high fever, which he does not have. Monitoring closely though.

[sheepdog76]

Possibly Founder?

[EmsoffLambs]

I'm thinking it must be acidosis. He just started scouring bad this morning and voluntarily ate some bicarb.

[Don Drewry]

We can get tubes of a dairy buffer gel that we use if we think digestively an animal is off.  They generally recover their appetite after a couple of these treatments. If we put a ram on antibiotic we also give him probiotic of some sort.

See: http://www.fleetfarm.com/detail/farm-life-dairy-buffer-gel/0000000004729