Frizzle (chicken breed)

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Frizzle
White Frizzle Chicken.JPG
A frizzle-feathered chicken at the Minnesota State Fair in Falcon Heights, Minnesota, USA; possibly not of the frizzle breed
Use fancy
Traits
Weight
  • Male:
    Standard: 3.2–3.6 kg [1] :121
    Bantam: 680–790 g [1] :123
    Bantam (Aust): 960–1075 g [2]
  • Female:
    Standard: 2.25–2.7 kg [1] :121
    Bantam: 570–680 g [1] :123
    Bantam (Aust): 790–910 g [2]
Egg colourwhite or tinted [1] :121
Comb typesingle
Classification
APA no [3]
EE Standard and bantam recognised [4]
PCGB soft feather: heavy [5]
APS Heavy Breed Softfeather [2]
Notes
clean-legged [1] :121
Illustration from the Geflugel-Album of Jean Bungartz, 1885 Tab42 Huhner (Geflugel-Album, Jean Bungartz, 1885).jpg
Illustration from the Geflügel-Album of Jean Bungartz, 1885

The Frizzle is a breed of chicken with characteristic curled or frizzled plumage. While the frizzle gene can be seen in many breeds, such as the Pekin and Polish, the Frizzle is recognised as a distinct breed in a number of European countries [4] [6] and Australia. [2] In the United States frizzled chickens are not considered a breed, and at shows are judged by the standards of the breed they belong to. [7] :24

Contents

History

The origin of the Frizzle is unknown. The frizzle gene is thought to have originated in Asia; [8] :137 frizzled chickens have been reported from the Far East since the eighteenth century. [6] The Frizzle breed is the result of breeder selection for exhibition. [6] [9] :102 It is recognised in nine European countries: Belgium, Czech Republic, France, Germany, Ireland, Italy, Poland, Slovakia and the United Kingdom. [4] [1]

Characteristics

The gene for the curling of the feathers is incompletely dominant over normal plumage; not all members of the breed have frizzled feathers. Frizzled birds are heterozygous for the gene; when two are bred, the offspring inherit the gene in the usual Mendelian 1:2:1 ratio: 50% are heterozygous and frizzled like the parents, 25% have normal feathering, and 25% are "over-frizzled", with brittle feathers resembling pipe-cleaners. The Frizzle has a single comb and is clean-legged – without feathers on the shanks. [1] :121 It is a good forager and is hardy. [6]

Four colours are recognised in the Entente Européenne standard: black, blue, cuckoo and white. [4] The Poultry Club of Great Britain recognises nineteen colours for both standard and bantam sizes; [10] not all of them are currently bred. [6] The Australian Poultry Standards recognise black, blue, buff, white, Columbian, red and "any recognised colour". [2]

Genetics

Research suggests that the frizzled phenotype comes from a mutation within the keratin gene KRT75. A deletion that removed part of exon 5 and intron 5 ameliorated the splice site. This caused a 69 bp deletion of the KRT75 gene. [11]

Use

Blue Frizzle Pullets bred in Jandowae Queensland Australia to Australian Standard. Blue Frizzle Pullets.jpg
Blue Frizzle Pullets bred in Jandowae Queensland Australia to Australian Standard.

The Frizzle is reared exclusively for exhibition. [1] :121 It is a good layer of white or tinted eggs, and frequently gets broody. [8] :137

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References

  1. 1 2 3 4 5 6 7 8 9 Victoria Roberts (2008). British poultry standards: complete specifications and judging points of all standardized breeds and varieties of poultry as compiled by the specialist breed clubs and recognised by the Poultry Club of Great Britain. Oxford: Blackwell. ISBN   9781405156424.
  2. 1 2 3 4 5 6 Australian Poultry Standards (2nd ed.). Victorian Poultry Fanciers Association (trading as Poultry Stud Breeders and Exhibitors Victoria). 2011. p. 79 & 80. ISBN   9781921488238.
  3. APA Recognized Breeds and Varieties: As of January 1, 2012. American Poultry Association. Archived 4 November 2017.
  4. 1 2 3 4 Liste des races et variétés homologuée dans les pays EE (28.04.2013). Entente Européenne d’Aviculture et de Cuniculture. Archived 16 June 2013.
  5. Breed Classification. Poultry Club of Great Britain. Archived 12 June 2018.
  6. 1 2 3 4 5 Welcome. The Frizzle Society of Great Britain. Archived 30 September 2012.
  7. Carol Ekarius (2007). Storey's Illustrated Guide to Poultry Breeds. North Adams, Massachusetts: Storey Publishing. ISBN   9781580176675.
  8. 1 2 Frances Bassom (2009). Chicken Breeds & Care: A Color Directory of the Most Popular Breeds and Their Care. Buffalo, NY: Firefly Books. ISBN   9781554074730.
  9. Chris Graham (2006). Choosing and Keeping Chickens. London: Hamlyn. ISBN   9780600614388.
  10. Frizzle Breed Standards. The Frizzle Society of Great Britain. Archived 16 October 2012.
  11. Ng, Chen Siang; Wu, Ping; Foley, John; Foley, Anne; McDonald, Merry-Lynn; Juan, Wen-Tau; Huang, Chih-Jen; Lai, Yu-Ting; Lo, Wen-Sui; Chen, Chih-Feng; Leal, Suzanne M. (19 July 2012). Roop, Dennis (ed.). "The Chicken Frizzle Feather Is Due to an α-Keratin (KRT75) Mutation That Causes a Defective Rachis". PLOS Genetics. 8 (7): e1002748. doi: 10.1371/journal.pgen.1002748 . ISSN   1553-7404. PMC   3400578 . PMID   22829773.