Quantifying various livestock characteristics to determine their superiority or inferiority. Methods vary depending on the type of livestock and the trait being tested, but commonly used tests include the milk-producing ability of dairy cows, the meat-producing ability of beef cattle and pigs, the wool-laying ability of sheep, and the egg-laying ability of chickens. It is an effective means of selecting superior livestock, and is particularly essential for the selection and breeding of breeding stock. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
家畜の種々の能力を数量化して,その優劣を判定すること。家畜の種類や検定する形質によって方法が異なるが,乳牛における泌乳能力,肉牛や豚における産肉能力,めん羊における産毛能力,鶏における産卵能力の検定などが広く行われている。優秀な家畜を選抜するのに有効な手段の一つであり,特に種畜の選抜,育種に不可欠のものである。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
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