Couple of sheep management questions.

Firstly, housed ewes with lambs at foot, ranging from 2 days old upwards, mostly twins with a few triplets, ad lib high quality forage either hay or dry silage, good intakes, what would be considered a practical level of concentrate feeding while still housed? Concentrate is a decent quality but standardish ewe and lamb pellet.

Secondly, we seem to have a lamb with joint ill. Lambing pens are clean straw over fresh hydrated lime, all navals done with iodine pretty much before the wee rascals even hit the ground, have we missed something?

All advice welcome and appreciated as ever.