Crested (duck breed)
|Standard||Poultry Club of Great Britain|
|Weight||Male: Standard: 3.2 kg
Miniature: 1.125 kg:415
|Female: Standard: 2.7 kg
Miniature: 0.9 kg:415
The Crested is a breed of domestic duck. It was probably brought to Europe from the East Indies by Dutch ships.:413 It has its appearance because it is heterozygous for a genetic mutation causing a deformity of the skull.
The Crested probably originates in the East Indies, with subsequent development in Holland.:413 Crested ducks are seen in seventeenth-century paintings such as those of Melchior d'Hondecoeter and Jan Steen. In the United States the breed was described by D.J. Browne in 1853.:413:197 The white Crested was added to the American Standard of Perfection in 1874; the black variant was added in 1977. The Crested was recognised in the United Kingdom in 1910.:413 In the UK, as in several other European countries, any colour is permitted.
|This section does not cite any sources. (September 2015)|
When two ducks heterozygous for the crested allele breed, their offspring are in the usual 1:2:1 ratio:
- 25% are homozygous for the normal allele of this gene and so have no crest and if bred together their offspring will never have a crest.
- 50% are heterozygous for this gene and hatch with a crest of varying sizes.
- 25% are homozygous for the crested allele of this gene and die from exposed brain without hatching, as it is lethal in homozygous form.
The offspring of a duck with a crest and a duck with no crest are expected to be 50% with and 50% without a crest.
- 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.
- APA Recognized Breeds and Varieties As of January 1, 2012. American Poultry Association. Accessed September 2015.
- Liste des races et variétés homologuée dans les pays EE (28.04.2013). Entente Européenne d’Aviculture et de Cuniculture. Accessed September 2015.
- Breed Classification. Poultry Club of Great Britain. Accessed August 2014.
- D.J. Browne, Samuel Allen (1853 ). The American poultry yard : comprising the origin, history, and description of the different breeds of domestic poultry, with complete directions for their breeding, crossing, rearing, fattening, and preparation for market …. New York: C.M. Saxton.
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