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Pat raised several good points here which should be reinforced.
The FCR differences amongst all these different birds are going to be a few scant percentages apart. We in the backyard waste more feed walking to the feeder with a small home in the bag than the FCR differences buy you. FCR's are also averaged over hundreds of birds, so within any 'breed' you'll have good performers and poor performers.
An advantage of the ISA browns and other sex links is that they are suitable for ranged production. Leghorns are typically used for confined production only.
Pat raised several good points here which should be reinforced.
The FCR differences amongst all these different birds are going to be a few scant percentages apart. We in the backyard waste more feed walking to the feeder with a small home in the bag than the FCR differences buy you. FCR's are also averaged over hundreds of birds, so within any 'breed' you'll have good performers and poor performers.
An advantage of the ISA browns and other sex links is that they are suitable for ranged production. Leghorns are typically used for confined production only.
