Crested (duck breed)
 Crested duck in the harbor of Camden, Maine | |
| Standard | Poultry Club of Great Britain |
|---|---|
| Traits | |
| Weight |
Male: Standard: 3.2 kg Miniature: 1.125 kg[1]:415 |
|
Female: Standard: 2.7 kg Miniature: 0.9 kg[1]:415 | |
| Classification | |
| APA | medium[2] |
| EE | yes[3] |
| PCGB | light[4] |
|
Duck Anas platyrhynchos | |
The Crested is a breed of domestic duck. It was probably brought to Europe from the East Indies by Dutch ships.[1]:413 It has its appearance because it is heterozygous for a genetic mutation causing a deformity of the skull.
History
The Crested probably originates in the East Indies, with subsequent development in Holland.[1]: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.[1]:413[5]:197 The white Crested was added to the American Standard of Perfection in 1874; the black variant was added in 1977.[2] The Crested was recognised in the United Kingdom in 1910.[1]:413 In the UK, as in several other European countries, any colour is permitted.[3]
A bantam version of the breed, the Crested Miniature, was bred by John Hall and Roy Sutcliffe in the United Kingdom in the late twentieth century; it was recognised in 1997.[1]:415
Breeding
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.
References
- 1 2 3 4 5 6 7 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.
- 1 2 APA Recognized Breeds and Varieties As of January 1, 2012. American Poultry Association. Accessed September 2015.
- 1 2 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 [1849]). 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.