?

John B Cole1

  • 1Council on Dairy Cattle Breeding, Bowie, MD 20716; Department of Animal Sciences, Donald Henry Barron Reproductive and Perinatal Biology Research Program, and the Genetics Institute, University of Florida, Gainesville, FL 32611-0910; Department of Animal Science, North Carolina State University, Raleigh, NC 27695-7621; Department of Animal Biosciences, University of Guelph, Ontario, Canada N1G 2W1.

Journal of dairy science
|September 5, 2025
PubMed
まとめ

繁殖指数は,多くの特質を持つ乳牛の全体的な遺伝的メリットを効果的に改善します. 稀な反応の懸念にもかかわらず,選択指数は経済的特徴の好ましい遺伝的利益を維持しています.

関連する概念動画

Cattell's 16 Personality Factors01:24

Cattell's 16 Personality Factors

Raymond Cattell's trait theory offers a structured framework for understanding personality by distinguishing between two critical traits: surface and source traits. Surface traits are observable patterns of behavior, such as indecisiveness, anxiety, and irrational fears. These traits are less stable, varying across situations and over time. This means that they are less helpful in understanding the deeper aspects of an individual's personality.
In contrast, source traits are the...
1.3K
Measures of Intelligence01:29

Measures of Intelligence

Psychologists measure intelligence by using standardized tests that produce a score known as the intelligence quotient or IQ. To understand IQ tests, it's important to recognize the key principles behind their construction: validity, reliability, and standardization.
Validity refers to how well a test measures what it claims to measure. An intelligence test should accurately assess intelligence rather than another characteristic, like anxiety. Criterion validity is one way to evaluate this;...
7.8K
Trait and State Self-Esteem02:08

Trait and State Self-Esteem

The term self-esteem is often used generically, to refer to how people feel about themselves. However, according to research, there are three distinct constructs that should not be used interchangeably (Brown & Marshall, 2006). 
10.9K