Table 5.
Description of the different genetic evaluation models based on a single-step approach and using information about the SOCS2 gene or not
Approach | Model | Use of SOCS2 data | Information used in the relationship matrix | ||
---|---|---|---|---|---|
Pedigree | 54K SNPs | SOCS2 SNP | |||
Single-trait | Pedigree-based BLUP | No | Yes | No | No |
ssGBLUP | No | Yes | Yes | No | |
ssGBLUPSOCS2a | Yes | Yes | Yes | Yes | |
WssGBLUP(m, n)b | No | Yes | Yes | No | |
WssGBLUPSOCS2 (m, n)b | Yes | Yes | Yes | Yes | |
Multiple-trait | Pedigree-based Gene Content | Yes (as a trait) | Yes | No | No |
Abbreviations: GBLUP Genomic Best Linear Unbiaised Prediction, ss single-step, W Weighted
aThe term SOCS2 here means that the SOCS2 SNP has been added to the 54K SNPs of the chip
bFour approaches to the WssGBLUP were computed (m = classical, mean, maximum or sum). The classical WssGBLUP approach (m = classical) gives a different weight for each marker of the chip. In alternative approaches, the chip is decomposed into non-overlapping windows of n markers (we tested n = 2, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 100, and 200) and within these windows, all markers are assigned the same weight: the mean weight of the n SNPs (m = mean), the maximum weight of the n SNPs (m = maximum), and the sum of the n SNPs weights (m = sum)