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Through Duck, Domestication and Foraging

Duck farming is simplified by their reliable flocking behaviour, and their ability to forage effectively for themselves. Over 80% of global duck production is in China. Breeds such as White Pekin are raised for meat, while the prolific Indian Runner can produce over 300 eggs per year. In East and Southeast Asia, polycultures such as rice-duck farming are widely practised: the ducks assist the rice with manure and by eating small pest animals, so that the same land produces rice and ducks at once.

In culture, ducks feature in children's stories such as The Tale of Jemima Puddle-Duck, and in Sergei Prokofiev's musical composition Peter and the Wolf; they have appeared in art since the time of ancient Egypt, where they served as a fertility symbol.

Origins

Domestication

Domestic mallards appear from whole-genome sequencing to have originated from a single domestication event of mallards during the Neolithic, followed by rapid selection for lineages favouring meat or egg production. They were probably domesticated in Southern China around 2000 BC (before the southward expansion of the Han dynasty) – by the rice paddy-farming ancestors of modern Southeast Asians – and spread outwards from that region. There are few archaeological records, so the date of domestication is unknown; the earliest written records are in Han Chinese writings from central China dating to about 500& BC. Duck farming for both meat and eggs is a widespread and ancient industry in Southeast Asia.

Wild mallard ducks were hunted extensively in Egypt and other parts of the world in ancient times, but were not domesticated. Ducks are documented in Ancient Rome from the second century BC, but descriptions – such as by Lucius Columella – suggest that ducks in Roman agriculture were captured in the wild, not domesticated; there was no duck breeding in Roman times, so eggs from wild ducks were needed to start duck farms.

The Muscovy duck was domesticated in Mexico and South America.

Origins of breeds

Most breeds and varieties of domestic duck derive from the mallard, Anas platyrhynchos; a few derive from Cairina moschata, the Muscovy duck, or are mulards, hybrids of these with A. platyrhynchos stock. Domestication has greatly altered their characteristics. Domestic ducks are mostly promiscuous, where wild mallards are monogamous. Domestic ducks have lost the mallard's territorial behaviour, and are less aggressive than mallards. Despite these differences, domestic ducks frequently mate with wild mallard, producing fully fertile hybrid offspring. A wild mallard weighs some 1.1 kg (2.4 lb), but large breeds like the Aylesbury may weigh 4.6 kg (10 lb) (and hybrids even more), while small breeds like the Appleyard may be only 0.7 kg (1.5 lb). Those breeds are raised for meat and eggs, while other breeds are purely ornamental, having been selected for their crests, tufts, or striking plumage, for exhibition in competitions.

A phylogenomic analysis found that Indian breeds of ducks formed a cluster that was sister to the White Pekin duck (a breed derived from ducks domesticated in China), while Muscovy ducks are from another genus.

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