Livestock Improvement

…The first successful attempt was made with rabbits in the UK at the end of the 19th century, but it was not until 1951 that it was successfully applied to livestock, particularly cattle. Livestock breeding has gradually improved the performance of offspring by mating males and females with superior genetic traits and distributing the sperm of males with superior traits over a wide area through artificial insemination. However, there is a limit to the distribution of superior genetic traits in female livestock. …

*Some of the terms used in relation to "livestock improvement" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…19世紀末に，イギリスでウサギに試みて成功したのが最初であるが，家畜とくにウシについては1951年に成功した。家畜改良は，優良な遺伝形質をもつ雌雄の交配，優良形質をもつ雄の精子の人工授精による広い範囲への分配によって，子畜の能力をしだいに高めてきた。しかし，雌畜の優良な遺伝形質の分配には限度がある。…

※「家畜改良」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