I've doubled the cake (grass pellets) ours are getting while the ground is frozen solid, plus doubled the quantity of haylage I give them. Ad lib hay as always (but we're using 2016 hay.) And salt and mineral / molasses licks. And we're carting warm water out to all the stock three times a day; they can't eat and digest much hay if they're not drinking water
If I had any amount of haylage, I'd have probably just upped the cake by 50% and given them ad lib haylage, but I know the supplier hasn't been able to get through to the agri store with more haylage so am eeking it out a little bit.
However, although the current conditions here are highly reminiscent of those I thought I'd left behind in Cumbria
, this is Cornwall and we are only expecting it sub-zero for a few days. I might be a bit more cautious with the cake if I thought it would be weeks.
It's certainly worth making sure the pregnant ladies have plenty to sustain them in the awful conditions; physiological stress can tip them into metabolic disturbances, so we need to help them weather these extremes.