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Table 4 Deboned parts characteristics from the replicate floor trials

From: SNP-based breeding for broiler resistance to ascites and evaluation of correlated production traits

Item n Wings Breast fillets Tenders Thighs Drumsticks
Weight, kg Yield1, % Weight, kg Yield, % Weight, kg Yield, % Weight, kg Yield, % Weight, kg Yield, %
Main effect of trial
Floor1 453 223.2a 7.947 431.6 15.33b 112.2 4.001b 380.4a 13.47a 271.9a 9.653a
Floor2 415 216.6b 7.936 432.4 15.79a 111.2 4.080a 362.7b 13.25b 260.3b 9.537b
SEM   1.5 0.020 3.7 0.07 0.8 0.020 3.3 0.05 2.1 0.027
Main effect of genetic line
MAS 439 221.2 7.928 435.9 15.57 114.0a 4.091a 376.3a 13.41 269.8a 9.649a
REL 429 218.9 7.956 427.9 15.54 109.5b 3.985b 367.5b 13.31 262.9b 9.546b
SEM   1.5 0.020 3.7 0.07 0.8 0.018 3.3 0.05 2.1 0.027
Main effect of sex
Male 395 247.5a 7.943 483.2a 15.49 121.8a 3.907b 427.6a 13.71a 302.7a 9.723a
Female 473 197.2b 7.940 389.1b 15.60 103.3b 4.149a 325.4b 13.07b 236.2b 9.494b
SEM   1.0 0.019 3.2 0.07 0.7 0.018 2.5 0.05 1.5 0.027
Trial × Line
Floor1 × MAS 233 224.1 7.925 436.7 15.37 114.4 4.057 383.5 13.53 274.7 9.717
Floor1 × REL 220 222.2 7.970 426.1 15.29 110.0 3.941 377.4 13.39 269.1 9.586
Floor2 × MAS 206 217.9 7.932 435.0 15.79 113.5 4.130 368.2 13.27 264.1 9.571
Floor2 × REL 209 215.4 7.940 429.8 15.80 108.9 4.031 357.1 13.22 256.5 9.504
SEM   2.2 0.029 5.3 0.10 1.2 0.029 4.7 0.08 3.0 0.040
Trial × Sex
Floor1 × Male 204 252.1 7.938 486.7 15.34 123.6a 3.899c 439.6a 13.85 310.2a 9.779
Floor1 × Female 249 199.4 7.954 386.2 15.33 102.7c 4.084b 330.9c 13.15 240.0c 9.550
Floor2 × Male 191 242.5 7.949 479.4 15.66 119.9b 3.915c 414.8b 13.57 294.7b 9.662
Floor2 × Female 224 194.7 7.925 392.3 15.90 104.0c 4.220a 319.3d 12.97 231.9d 9.433
SEM   1.3 0.029 4.7 0.10 1.1 0.027 3.6 0.08 2.0 0.038
Line × Sex
MAS × Male 209 248.8 7.911 489.8a 15.53 124.2 3.944 434.2a 13.79 306.8a 9.765
MAS × Female 230 196.3 7.944 387.0b 15.60 104.7 4.225 323.7c 13.07 236.4c 9.544
REL × Male 186 246.0 7.980 475.8a 15.45 119.4 3.865 420.6b 13.63 298.5b 9.675
REL × Female 243 198.0 7.937 391.0b 15.61 101.8 4.076 326.7c 13.06 235.7c 9.447
SEM   1.7 0.028 5.0 0.11 1.1 0.026 3.7 0.08 2.3 0.041
P-values
Trial   < 0.001 0.630 0.834 < 0.001 0.296 < 0.001 < 0.001 < 0.001 < 0.001 0.002
Genetic line   0.840 0.286 0.324 0.665 < 0.001 < 0.001 0.003 0.258 < 0.001 0.016
Sex   < 0.001 0.773 < 0.001 0.180 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
Trial × Line   0.085 0.393 0.698 0.532 0.924 0.631 0.404 0.897 0.564 0.563
Trial × Sex   0.053 0.558 0.079 0.210 0.010 0.014 0.025 0.481 0.032 0.903
Line × Sex   0.213 0.185 0.050 0.538 0.339 0.127 0.006 0.287 0.032 0.842
Trial × Line × Sex   0.245 0.073 0.568 0.441 0.725 0.668 0.607 0.251 0.906 0.827
  1. Abbreviations: Floor1 Floor cohort 1, Floor2 Floor cohort 2, MAS marker-assisted selection line, REL Relaxed (control) line
  2. 1: Yields calculated based on back-dock live weight
  3. Item values with different superscript letters in a column indicate significant difference (p < 0.05) in that trait or effect