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. 2017 Jul 21;18:68. doi: 10.1186/s12863-017-0534-2

Table 4.

Estimation of historic effective population size for different intervals between one and 100 generations ago for Method 1 (M1) using 1 cM = 1 Mb, Method 2 (M2) using a chromosome-specific ratio of cM per Mb and method 3 (M3) using the expected genetic position per SNP

Breed denomination Method Ne Diff Ne
1 5 20 50 100 Ne 100 – Ne 1
Romney M1 78 263ab 262ab 333ab 553 475
M2 75 220bc 171bc 295b 525 450
M3 77 237ac 188ac 305a 535 458
Coopworth M1 50 119ab 185ab 293ab 506 456
M2 46 95bc 139bc 260b 473 427
M3 47 100ac 150ac 271a 489 442
Perendale M1 41 130ab 210ab 332ab 573 532
M2 39 106bc 159b 297b 541 502
M3 40 111ac 170a 308a 555 515
Texel M1 32 85ab 134ab 224ab 391 359
M2 30 67bc 105b 202b 369 339
M3 30 71ac 110a 205a 373 343
CompRCP M1 45 139a 254ab 399ab 689 644
M2 43 120c 187bc 349b 636 593
M3 43 124ac 201ac 362a 652 609
CompRCPT M1 27 86ab 183ab 315ab 556 529
M2 26 76bc 148b 291b 537 511
M3 26 78ac 155a 295a 539 513
Comprcp2 M1 42 130ab 267ab 460ab 811 769
M2 41 111bc 212bc 415b 766 725
M3 41 113ac 226ac 439a 806 765

a,b,csignificant differences at α = 0.05 between Ne estimates in a breed for the same generation estimated using different methods