Table 2.
Number of sires with and without identified runs of homozygosity (ROH), total number of ROH per population, average number of ROH per population and average sum of the lengths of ROH for each of the nine Swiss dairy cattle populations
| Population | Number of sires without ROH | Number of sires with detected ROH | Total number of ROH | Avg. number of ROH segments (min–max) (p < 2.2e−16)* |
Avg. sum of the lengths of ROH segments (Mb) (min–max) (p < 2.2e−16)* |
|---|---|---|---|---|---|
| BS | 0 | 281 | 5892 | 21.0 (6–38)A | 226.4 (39.2–505.1)A |
| BV | 7 | 3379 | 62,783 | 18.6 (1–38)B | 184.6 (3.7–638.3)B |
| OB | 3 | 164 | 1382 | 8.4 (1–27)C | 73.7 (4.9–234.6)C |
| HO | 5 | 2563 | 36,498 | 14.2 (2–32)D | 145.2 (8.2–696.3)D |
| RH | 3 | 1957 | 21,979 | 11.2 (1–30)E | 112.1 (4.0–460.8)E |
| SF | 16 | 531 | 3772 | 7.1 (1–21)C | 75.6 (3.4–273.5)C |
| SI | 0 | 248 | 2703 | 10.9 (2–26)E | 96.6 (13.2–299.8)F |
| ER | 0 | 36 | 305 | 8.5 (2–15)C,E | 66.2 (9.6–171.5)C, F |
| EV | 0 | 21 | 326 | 15.5 (6–30)B,D | 185.7 (35.0–371.3)A, B, D |
| Total | 34 | 9180 | 135,640 |
BS Brown Swiss, BV Braunvieh, OB Original Braunvieh, HO Holstein, RH Red Holstein, SF Swiss Fleckvieh, SI Simmental, ER Eringer, EV Evolèner
* p value, Kruskal–Wallis test, R: kruskal.test()
A,B,C,D,E,FDifferent letters indicate significant Bonferroni-adjusted differences between breeds, as assessed in the R-package DUNN.TEST