And layers I keep in a special hut, so they won't be stressed, because otherwise I will loose one egg per day.
I don't keep layer in a special hut, this means they are more stressed and I loose an egg a day if not more. 
mnli hypothesis: I don't keep layer in a special hut, this means they are more stressed and I loose an egg a day if not more.  premise: And layers I keep in a special hut, so they won't be stressed, because otherwise I will loose one egg per day.