Definition

Noun: - A breeding method, especially for domestic poultry, in which chicks can be sexed (identified as male or female) immediately upon hatching based on distinct, visually apparent characteristics such as plumage color or pattern.

Usage

• Primary Usage: The term is used almost exclusively in the context of animal husbandry and genetics, particularly for poultry like chickens.
• Key Concept: It describes the or of selective breeding, not the act of sexing itself. The chicks are "autosexing" because their sex is automatically apparent from their appearance at birth.

Examples

• The farmer invested in an autosexing breed of chickens to save time and avoid the stress of manually determining the sex of each chick.
• Through careful genetic selection, they developed an autosexing line where male chicks have a light spot on their heads and females do not.
• The main advantage of autosexing is the immediate separation of chicks, which is more humane for industries that may not require males.

Advanced Usage / Technical Context

• In genetics, autosexing is achieved by breeding for sex-linked traits—characteristics controlled by genes located on the sex chromosomes. This allows the trait (e.g., feather color) to manifest differently in males and females from day one.
• The term is often used attributively (like an adjective) before nouns such as "breed," "strain," "variety," or "characteristic."

Variants and Related Words

• Autosex (verb, rare): To breed for or identify by autosexing characteristics.
  • They aimed to autosex their flock for greater efficiency.
• Auto-sexing (noun): A hyphenated variant spelling.
• Sex-linked: A key related genetic term describing the inheritance pattern that makes autosexing possible.

Synonyms

• Day-old sexing: A more descriptive synonym emphasizing the time factor.
• Sex-linked plumage coloring: A specific technical description for a common method.

Notes on Meaning

• Specific Domain: This is a highly specialized term. It does not refer to general animal characteristics or to self-identification of sex/gender in other contexts.
• Process vs. Trait: "Autosexing" refers to the breeding methodology and the resulting of the organism. The chicks themselves are described as "autosexing" or from an "autosexing breed."

Noun

1. (especially of domestic fowl) breeding to reveal differential sex characteristics at hatching