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Table 1 Fertility phenotypes of the Holstein bulls used for flow cytometry analysis

From: Testis specific histone 2B is associated with sperm chromatin dynamics and bull fertility-a pilot study

High fertility bulls Low fertility bulls
Bull number No of breeding’s In vivo fertility score Bull number No of breeding’s In vivo fertility score
1 705 3.9 14 974 −4.7
2 965 3.7 15 555 −4.2
3 2924 3.6 16 1083 −4.1
4 737 3.5 17 793 −4.1
5 3137 3.4 18 758 −4.1
6 859 3.4 19 862 −4.1
7 745 3.1 20 469 −4.1
8 2195 3 21 892 −3.8
9 1134 3 22 987 −3.7
10 965 3 23 1105 −3.7
11 682 2.9 24 901 −3.6
12 3647 2.8 25 927 −3.6
13 6051 2.6 26 1020 −3.6
  1. Bulls 1–13 are designated as the HF group and bulls 14–26 are designated as the LF group. All bulls were individually represented with their in vivo fertility scores and the number of breeding’s as well as no significant differences in their sperm parameters. Fertility scores are expressed as the percent deviation of each conception rate from the average conception rate of all the bulls as previously described [26]