- Jun 10, 2014
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You're overthinking this - a cornish X hen will start laying in the 20-24 week range - about the same as a dual purpose like a Barred rock - the difference is that (if she lives that long), the Cornish will be 15+ lbs, and the Barred Rock will be 6-7.
The fact that the cornish cross grows so fast, and gets so big allows you to harvest them well before they're mature - we harvest at the point that growth slows down and feed conversion goes up - not because the bird has matured. With the Barred Rock, you have to wait until you have an adult bird before they're big enough that they're worth slaughtering, and that means they're older, they've been running around more, and they're more muscly.
The fact that the cornish cross grows so fast, and gets so big allows you to harvest them well before they're mature - we harvest at the point that growth slows down and feed conversion goes up - not because the bird has matured. With the Barred Rock, you have to wait until you have an adult bird before they're big enough that they're worth slaughtering, and that means they're older, they've been running around more, and they're more muscly.