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Table 2 Effect of marker density on accuracy and genetic gain for within-family selection and no pre-selection

From: A low-marker density implementation of genomic selection in aquaculture using within-family genomic breeding values

Markers per Morgan

Accuracy of selection

Genetic gain (σg)

  

CAND1

SIB2

Total

3

0.58 (0.002)

1.06 (0.010)

0.71 (0.011)

1.77 (0.015)

6

0.59 (0.004)

1.11 (0.010)

0.73 (0.009)

1.84 (0.013)

12

0.60 (0.002)

1.15 (0.009)

0.73 (0.009)

1.88 (0.011)

25

0.61 (0.002)

1.18 (0.012)

0.73 (0.009)

1.91 (0.012)

50

0.61 (0.001)

1.20 (0.008)

0.72 (0.009)

1.92 (0.011)

100

0.62 (0.001)

1.21 (0.010)

0.73 (0.011)

1.95 (0.013)

  1. Selection was based on a sum of conventional BLUP family breeding values and genomic within family breeding values (W-FAM), and all candidates and test-individuals were genotyped. Standard errors are given in parantheses.
  2. 1 A trait measured on the selection candidates themselves.
  3. 2 A trait measured on full-sibs of the selection candidates.