Noble - Kika

Japanese: 貴化 - きか
Noble - Kika

…This is a breeding method often used to genetically improve unimproved livestock in underdeveloped areas. It is also called nobility. A male of an improved species is introduced and crossed with a female of a native species to produce a first generation hybrid. The first generation female is then crossed with a male of an improved species, and the next generation is crossed with an improved species. In this way, the breed can be made closer to the improved species with each generation.

*Some of the terminology explanations that mention "nobleness" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…畜産後進地の未改良の家畜を遺伝的に改良する場合にしばしば用いられる交配法で,貴化ともいう。改良種の雄を導入して,在来の品種の雌に交雑して生まれた雑種第1代の雌に,再度改良種の雄を交配し,さらにその次代にも改良種を交配するという方法で,これにより代を重ねるごとに改良種に近づけることができる。…

※「貴化」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

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