autosexing strain

...This method has the advantage that it does not require as much practice as finger head identification, but it takes time to identify, so it is often used as an auxiliary method for individuals that are difficult to identify by finger head identification. (3) Identification using sex-linked genetic traits This method uses the inheritance of traits controlled by genes on the sex chromosome (Z chromosome) to make sex differences appear in the appearance of newborn chicks, and is called an autosexing strain. For example, if a barred Plymouth Rock female is mated with a black chicken male, all the male chicks in the first generation of the hybrid will be barred and the female chicks will be black, and the barred chicks can be distinguished by the white spots on their heads. ...

*Some of the terminology that mentions "autosexing strain" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…この方法は指頭鑑別法ほどの習熟を要さずに実施できる利点はあるが，鑑別に時間を要するので，指頭鑑別で判定困難な個体に補助的に用いる場合が多い。(3)伴性遺伝形質利用の鑑別法　性染色体(Z染色体)上の遺伝子により支配される形質の遺伝を利用し初生雛の外観に性差を出現させる方法で，自家性別系統autosexing strainという。例えば横斑プリマスロック種の雌と黒色鶏種の雄とを交配すると，その雑種第1代の雄雛はすべて横斑，雌雛は黒色となり，横斑の雛は頭部に白い斑点が認められるので区別できる。…

※「autosexing strain」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報