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I agree with you, except that they don't use leghorn hens, they use an strain of CornishX maternal line with a sex linked Dwarfism gene. this makes for smaller hens that east less and occupy less room and when breed to "Normal" paternal line of CornishX roos, the Roos get one shot of the sex linked dwarfism(described as "dw" which is recessive by the way) and the hens lack that dwarfism gene, making them normal...
I say combine a good laying large breed of rooster with a "normal" cornishX hen that has been feed restricted, this will stunt her grown and make her small and manageable but she will pass her large frame and faster growth to her chicks...
more on the use of dw dwarf gene..
Sire broiler line consist of A and B line will be Dw+(lacking the dwarf gene and dominant)
dame line consist of C and D lines. For the female of the CxD cross to be a dwarf, the C line must be homozygous for the dw gene, strain D being preferable normal so the brother of the dame line will be of normal size and can be sold as broilers
at first when I started my project I believed that using a few food restricted males over much larger population of good sized Isa browns(they don't eat as much as dual purposes breeds but lay alot more) could produce large amount of good sized broilers, but it was hard for me at the time to keep them small enough, even feed restricted this boys where too large... maybe in the future I'll give it another try..
I agree with you, except that they don't use leghorn hens, they use an strain of CornishX maternal line with a sex linked Dwarfism gene. this makes for smaller hens that east less and occupy less room and when breed to "Normal" paternal line of CornishX roos, the Roos get one shot of the sex linked dwarfism(described as "dw" which is recessive by the way) and the hens lack that dwarfism gene, making them normal...
I say combine a good laying large breed of rooster with a "normal" cornishX hen that has been feed restricted, this will stunt her grown and make her small and manageable but she will pass her large frame and faster growth to her chicks...
more on the use of dw dwarf gene..
Sire broiler line consist of A and B line will be Dw+(lacking the dwarf gene and dominant)
dame line consist of C and D lines. For the female of the CxD cross to be a dwarf, the C line must be homozygous for the dw gene, strain D being preferable normal so the brother of the dame line will be of normal size and can be sold as broilers
at first when I started my project I believed that using a few food restricted males over much larger population of good sized Isa browns(they don't eat as much as dual purposes breeds but lay alot more) could produce large amount of good sized broilers, but it was hard for me at the time to keep them small enough, even feed restricted this boys where too large... maybe in the future I'll give it another try..
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