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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.