Population structure and genomic inbreeding in nine Swiss dairy cattle populations

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

ISSN: 1297-9686