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Unlike sex-linked hybrids, such as 'red sex-links' or 'black sex-links', the Legbar is an auto-sexing breed.Several other auto-sexing breeds or auto-sexing varieties of breeds exist, such as Plymouth Rock, Bielefelder Kennhuhn, Niederrheiner, and Norwegian Jærhøns.
The Plymouth Rock was included in the first edition of the American Standard of Perfection of the new American Poultry Association in 1874. [2] The barred plumage pattern was the original one; other colors were later added. [2] It became the most widespread chicken breed in the United States and remained so until about the time of World War II. [2]
The B1 allele is causing the typical sex-linked barring phenotype/ appearance and is present in most modern sex-linked barred chicken breeds. Females or male chickens carrying the B2 allele in the heterozygous condition show a defined barring pattern but in the homozygous condition, males are essentially white with very little pigmentation. [9]
A roasted Cornish game hen A Cornish game hen ready for the oven. Cornish game hen (also Rock Cornish game hen) is the USDA-approved name for a particular variety of broiler chicken, produced from a cross between the Cornish and White Plymouth Rock chicken breeds, that is served young and immature, weighing no more than two pounds (900 g) ready to cook.
The Polbar is a breed of chicken from Poland. It was created between 1946 and 1954 by Laura Kaufman, who crossed the native Polish Green-legged Partridge breed with American Plymouth Rock birds. The aim was to introduce the barred gene of the Plymouth Rock to make chicks auto-sexing – female chicks can be distinguished from males at one day ...
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Between 1946 and 1954 Laura Kaufman crossed the Green-legged Partridge breed with American Plymouth Rock birds to create the Polbar. The aim was to introduce the barred gene of the Plymouth Rock to make chicks auto-sexing – female Polbar chicks can be distinguished from males at one day old by the longer black eye-stripe. [2] [5]
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