The final design included 31 linear traits (20 primary and 11 secondary).
The ewes were scored for the 5 linear traits used in the breeding scheme of the Churra breed to assess body conformation: stature, rear legs-rear view, foot angle, rump width, and general appearance.
This is the blending of logical and linear traits with behaviors that are mindful, present and authentic.
The relationships within species among the linear traits typically used to characterize body size and body mass are frequently not isometric [40], suggesting that measures of the form of distributions will differ among the traits.
The estimation of genetic correlations between a nonlinear trait such as longevity and linear traits is computationally difficult on large datasets.
The radiographic findings considered included osseous fragments in fetlock (OFF) and hock joints (OFH), deforming arthropathy in hock joints (DAH) and distinct radiographic findings in the navicular bones (DNB) which were analyzed as binary traits, and radiographic appearance of the navicular bones (RNB) which was analyzed as a quasi-linear trait.
Phenotypic traits included scores for 5 linear udder traits: udder depth, udder attachment, teat placement, teat size, and udder shape.
In their study, accuracies of DGV for linear type traits were lower than for production traits and ranged from 0.63 to 0.71, compared to an average of 0.56 for PA for these traits.
Short and Lawlor [ 3] found that genetic correlations between linear type traits and first lactation yield ranged from 0.48 to 0.54.
For the quantitative traits, the additive model assumed a linear trend in trait mean and constant trait variance with increasing minor allele count (0,1, or 2), while the general model allowed any changes in both mean and variance over genotypes.
