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Table 1 Numbers of sires and records and mean egg number and weight for each cross

From: Predicting heterosis for egg production traits in crossbred offspring of individual White Leghorn sires using genome-wide SNP data

Cross Number of genotyped sires Number of crossbred progeny records 1 Average egg number Average egg weight (g)
D1*D4 301 2972 341.9 62.1
D1*S1 471 4808 342.6 60.7
S1*D1 259 3020 338.2 62.1
S1*D2 318 3768 339.0 60.2
S1*D3 243 3013 340.6 59.9
S1*D4 267 2921 334.1 60.9
S4*D1 48 340 331.3 62.5
S4*D2 43 318 336.2 61.1
S4*D3 16 201 336.9 60.4
S4*D5 366 3442 324.5 61.1
S4*D6 367 3588 326.1 60.0
S5*D1 33 285 345.1 62.4
S5*D2 40 353 343.1 60.9
S5*D3 42 354 345.2 60.8
S5*D5 308 2742 334.5 62.9
S5*D6 305 2674 332.9 61.1
  1. 1Each record is a cage-based average. There were ~ six hens per cage.