I have 25 isa browns born june 1st.
I am getting 24 eggs a day on a bad day, 25 most days and 28 in a 24 hour cycle has been the most yet......
I got 26 yesterday, this has been going on for the last 3-4 weeks now, the girls are healthy and happy, suplimenting the light a bit and one 175 IR bulb and insulated 12x8 coop.
The only time I usually get 24 eggs is when I get a double yolker.
I feed them laying crumbles, supliment with oyster shells and lately they have been getting lots of cabbage (end bits from making sourcraut) and some whole wheat crusts(last 2 weeks)
Stangely it has gotten down to -40'C with the windchill and I figured production would go down, not up...