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Table 1 Numbers of pigs tested, sires, lines and families per farm1

From: Traits associated with innate and adaptive immunity in pigs: heritability and associations with performance under different health status conditions

Source 1 2 3 4
Farm A    B   D E C F   G
Health status SPF    SPF   Non-SPF SPF Non-SPF Non-SPF
Generation G1 G2 GX G1 G2 G2 GX G1 G2 GX GX
No. pigs:            
Performance 47 684 373 92 259 148 300 94 398 72 175
Immune traits 47 0 373 92 68 59 300 94 0 72 175
APP 0 0 373 0 0 0 300 0 0 72 175
No. groups:            
Sires 21 42 27 23 5 2,3 5 2,3 17 10 52 11 55
Full-sib families 33 155 200 53 53 53 121 19 53 18 72
Genetic lines 8 4 2 1 1 1 1 1 1 8 13
Breed LW LW LW LW LW LW LW LW LW LR LW
  1. 1 For each source, G2 progeny were derived from G1 boars. All pigs tested for immune traits also had performance measurements. 2642 pigs were performance tested, 1280 pigs were tested for immune traits and 920 pigs were tested for APP. 2 All sires were measured when they were growing pigs. 3These were the same sires.