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Steel (Es)

Steel (Es)

Gene

Steel (Es) is a classical allele of the rabbit extension gene, MC1R, below dominant black (ED) and above normal extension (E). With normal extension (Es/E), an agouti rabbit can show dark hairs with silver or gold tips and a dark belly. Classic crosses found Es/Es rabbits nearly black and Es/e rabbits less clearly ticked. No separate DNA variant distinguishing Es from ED has been established.

How Steel (Es) works

Steel (Es) is part of the Extension series: Dominant Black (ED), Steel (Es), Normal Extension (E), Harlequin (ej), Non-extension (e). It shows over Normal Extension (E), Harlequin (ej) and Non-extension (e) and is hidden by Dominant Black (ED).

Breeding studies place steel between dominant black and normal extension; one study found Es/Es looks black and Es/e looks agouti-black, so a steel coat is usually Es with normal extension. Other genotypes can also look steel.

Class
Incomplete dominant
One copy
One Es copy
Two copies
Two Es copies
Symbol
Es
Part of

Looks like

A steel-looking coat does not prove the steel allele: some dominant black and chocolate carrier combinations look steel too.

What it looks like

Illustrations of typical animals, checked against the sources below. Not photos of DNA-tested animals.

Chestnut agouti Holland Lop on a plain domestic garden lawn.
Chestnut agoutiNormal extension (E/E) on an agouti rabbit.
Gold-tipped steel Holland Lop on a plain domestic garden lawn.
Gold-tipped steelSteel with normal extension (Es/E): dark hairs with gold tips and a dark belly. Some other genotypes look steel too.

Sources

Show all 14 sources

Plan a pairing

Plan a pairing with Steel (Es)

Example: about 1 in 2 Steel per kit at conception (1/2).

Rabbits with Steel (Es)

One copy recorded

One copy of Steel (Es) is recorded; the other allele is not recorded, so its expression is undetermined.

Quick facts

Guides & articles
24

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Guides & articles

Guides and articles for Steel (Es) rabbit owners.

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How Long Are Rabbits Pregnant? Rabbit Gestation Period and Due Date

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Steel (Es) Tools

Calculators, generators, and guides preset for Steel (Es) rabbit.

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