Table 2 Description of three different scenarios for trait 1.

S₁₂_L_2 × 3

4–12 Average 9.6

A litter was divided into two sublitters and distributed into two pens, each pen included four sublitters

S₁₂_L_ran

4–12 Average 9.6

Randomly assigned individuals to pens, each pen contained up to 12 individuals

S₂₄_L_2 × 3

12–24 Average 19.2

A litter was divided into two sublitters and distributed into two pens, each pen included eight sublitters