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Factor Analysis of Linear Type Traits and Their Relation with Longevity in Brazilian Holstein Cattle
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  • Factor Analysis of Linear Type Traits and Their Relation with Longevity in Brazilian Holstein Cattle
  • Factor Analysis of Linear Type Traits and Their Relation with Longevity in Brazilian Holstein Cattle
저자명
Kern. Elisandra Lurdes,Cobuci. Jaime Araujo,Costa. Claudio Napolis,Pimentel. Concepta Margaret McManus
간행물명
Asian-Australasian journal of animal sciences
권/호정보
2014년|27권 6호|pp.784-790 (7 pages)
발행정보
아세아태평양축산학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this study we aimed to evaluate the reduction in dimensionality of 20 linear type traits and more final score in 14,943 Holstein cows in Brazil using factor analysis, and indicate their relationship with longevity and 305 d first lactation milk production. Low partial correlations (-0.19 to 0.38), the medium to high Kaiser sampling mean (0.79) and the significance of the Bartlett sphericity test (p<0.001), indicated correlations between type traits and the suitability of these data for a factor analysis, after the elimination of seven traits. Two factors had autovalues greater than one. The first included width and height of posterior udder, udder texture, udder cleft, loin strength, bone quality and final score. The second included stature, top line, chest width, body depth, fore udder attachment, angularity and final score. The linear regression of the factors on several measures of longevity and 305 d milk production showed that selection considering only the first factor should lead to improvements in longevity and 305 milk production.