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Table 2 Descriptive statistics of runs of homozygosity (ROH) number and length (in Mb) by ROH length class (ROH 1–2 Mb, ROH 2–4 Mb, ROH 4–8 Mb, ROH > 8 Mb and total)

From: Genome-wide selection signatures detection in Shanghai Holstein cattle population identified genes related to adaption, health and reproduction traits

Class No. of ROH Percent (%) Mean length Standard deviation Genome coverage (%)
ROH1 − 2 Mb 13,992 31.00 1.54 0.28 0.79
ROH2 − 4 Mb 20,915 47.00 2.84 0.57 2.16
ROH4 − 8 Mb 9279 21.00 5.08 0.89 1.72
ROH> 8 Mb 323 1.00 9.41 1.37 0.11
Total 44,509 100 2.95 1.49 4.8