lack of calcium - wobbly cow

[Broomcroft]

Jean, can you get bolluses for all your cattle to deal with this, I'm asking, I don't know? Would have thought so surely.

Can licks play a part? We just lost loads of fully grown healthy lambs to mag def, changed lick supplier and it stopped immediately. Gone over to Rumenco high mag which they love, a bit too much actually for my pocket.