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Table 3.

The value of the selection differential at different intensities and selection methods

Group Way of selection Boars Breeding sow
% of rejection Early maturity Bacon thickness % of rejection Early maturity Bacon thickness
days % cm % days % cm %
1 Simultaneous Sequential Average 75 15.6 7.7 0.55 19.1 30 7.4 3.1 0.12 3.9
75 15.9 7.8 0.48 16.7 30 7.4 3.1 0.11 3.6
75 15.7 7.7 0.52 18.0 30 7.4 3.1 0.12 3.7
2 Simultaneous Sequential Average 50 4.5 2.2 0.07 2.43 30 5.1 2.1 0.12 3.9
50 4.9 2.4 0.13 4.51 30 7.5 3.1 0.16 5.3
50 4.7 2.3 0.10 3.47 30 6.3 2.6 0.14 4.6
3 Simultaneous Sequential Average 30 0.2 0.1 0.14 4.86 30 5.9 2.5 0.09 3.0
30 2.4 1.2 0.02 0.69 30 6.1 2.6 0.12 3.9
30 1.3 0.6 0.07 2.43 30 6.0 2.5 0.11 3.6

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