Well yes, i believe in the UK it is technically illegal to feed chickens or other farm animals with meat products, any cooked leftovers, or indeed any scraps or peelings etc from fruit or veg which have even been in a human kitchen. The regs were brought in after the foot and mouth outbreak which wreaked such devastation on herds nationally, and were mainly designed to prevent farmers feeding their animals with food waste from commercial kitchens. One of those regulations for the good of all, but which don’t appear to apply so obviously to domestic keepers of small flocks, like us.
I’m sure Shadrach is very careful about the quality and provenance of any meat he may feed, and of course regs may be different in the country where he lives. Personally I don’t feed meat, but this is mainly because we are pretty well vegetarian and if we do occasionally have any meat, we eat it all and the dog would be next in line anyway! And as a national poultry forum, I don’t think we could recommend feeding meat, knowing it isn’t DEFRA approved to do so.
As for condition during moult, well yes, a hen may be a bit listless and will stop laying because it is taking so much of her protein and calcium resources to make all that lovely new plumage. This is usually temporary and they just get through it in their own time and perk up once they have completed the process. It’s not an illness, just a bad hair day! I just add some Nettex mineral powder to their afternoon damp mash, along with a few sunflower seeds and mealworms, and make sure they’ve been recently wormed with Flubenvet, as a worm burden will in itself pull a chicken down and make him or her less able to meet nutritional challenges.You're right, Icemaiden, about the fact that they are omnivorous and will eat any live food that they come across, swallowing mice whole, but there is still the chance that a mouse which can’t run fast enough to escape is actually feeling a bit under the weather because of the rat killer it has recently eaten ....
As for Seawater’s original query, it is unusual for a 7-month-old pullet to moult at all. Usually they moult at the end of their second summer season. I wonder if you have wormed them all with Flubenvet since you got them, Seawater? It would be good to do this before the winter really gets going and then 6-monthly afterwards. Please ask if unsure how to do this.