I came to this thread because I recalled Laura Ingalls Wilder writing about using a "well peppered mash" to keep hens laying through the winter.
Since she lived in South Dakota before the advent of electric lights, I was thinking that there must be something to this, because lower income folks wouldn't waste money on something that doesn't work.
So then I thought, "What type of pepper do they mean? Is she referring to a bran mash?" Sadly LIW passed before I was born, so I can't ask her, but thankfully, there are these forums still hanging around even 10 years later to answer newbie questions.
So for the record, my girls have only been laying for a couple of months, and production has slowed in the last week. I'm worried, because I do want to have an egg or two per day from my 9 hens through the winter.
Since in live in SEAZ (South-east AZ) at 4500ft, it hasn't gotten too cold yet, but nights are getting brisk.
So I'll be feeding my girls some crumbles with added cayenne and a bit of black pepper to see if there is any improvement. I can't afford to buy/use lights on timers, etc. So we'll just have to see if my girls keep producing during the winters.
Cautionary note: use a mask whilst mixing black pepper unless you want to sneeze your behind off! (Don't ask me how I know, )