Feed efficiency is key to bang for the buck.. ISA, White legorn, Cal white; but it still won't pay. There are many pressures on feed prices now, mainly more demand, with all the urban bans lifted, as well as weather, and speculation in the futures markets. Price for chicken feed has dbld in the last 10 years, and tippled since 20 yrs ago. It's a hobby, enjoy it, and don't beat yourself up, trying to do the math on profitability.