Genetic parameters for wool traits for Columbia, Polypay, Rambouillet, and Targhee breeds of sheep were estimated with single- and multiple-trait analyses using REML with animal models. Traits considered were fleece grade, fleece weight, and staple length. Total number of observations ranged from 11,673 to 34,746 for fleece grade and fleece weight and from 3,500 to 11,641 for staple length for ...

Claw disorders affect cow welfare and profitability of farms. Not only claw disorders but also the need for trimming, known as trimming status, has been shown to be heritable. Limited knowledge is available on whether claw health traits (claw disorders and trimming status) are genetically the same trait in different parities, lactation stages, or in herds with low or high frequency of claw diso...

An empirical classification of certain coping strategies from Ch. Carver’s studies is presented. Hierarchic approach to behavior (coping-actions, strategies, styles) was used. The sample consisted 1 469 students. Using the method cluster analysis, we identified productive, unproductive styles, as well externally-oriented coping-style, which positively correlates with both productive and styles....