weakness

I'm very new to this forum, but I joined because I feel like this would be the best place to find help for my problem. One of my sheep, a lamb who's just over a year old, suddenly started having some problem with her hips: She's able to stand just fine. She's bright and alert. Doesn't show any...

We're concerned that the sheep grain (dumor Lamb and Ewe) we have been feeding a few of our lambs and ewes is causing issues. Sometimes *as they are eating the grain* one will get suddenly weak, wobbly, and then find a corner to collapse in. Could this be toxins in the grain? Would that cause...