update

he spends alot of time standing like this .
Head down, not moving , unsteady on  legs

And is still falling over

We still tihnk its Seleneium deficiency. He has had the treatment. So we have to wait it out and see if he improves .

its not jointill

We did have a lamb with a limp . And it got a course of antibiotics and got a bit better.  But then it got worse.
And its not limping - its  tripping over its front legs as they give way . The lamb  hasnt got a temperature  and the joints arent swollen so we dont think its anopther episode of infection.
 It could be White muscle disease Due to selenium deficiency . 

this lamb ticks many of the boxes for Selenium deficiency

• average annaul  precipitation is 948mm /yr
• weve certainly got lush pasture at the moment 
• the lamb is growing rapidly 

So its had an injection of Selenium an Vitamin E . It may improve, or it may not . We shall see