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Table 2 Variance components, heritability estimates, highest posterior density range (HPD; 5%—95% interval), and Geweke score for andrological traits in Nellore cattle

From: Genetic parameters for various semen production and quality traits and indicators of male and female reproductive performance in Nellore cattle

Trait

 

Mean

HPD Interval

Geweke

(5% 95%)

(Z-score)

Bull's trait

VOL

\({\sigma }_{u}^{2}\)

0.20

0.07

0.33

0.26

h2

0.05

0.02

0.09

0.26

VIG

\({\sigma }_{u}^{2}\)

7.97E−03

3.78E−03

1.22E−02

0.21

h2

0.03

1.63E−02

5.20E−02

0.21

TURB

\({\sigma }_{u}^{2}\)

0.03

0.01

0.06

-0.18

h2

0.04

0.02

0.07

-0.18

MOT

\({\sigma }_{u}^{2}\)

6.71

3.39

10.03

0.03

h2

0.05

0.03

0.08

0.03

SC

\({\sigma }_{u}^{2}\)

4.69

4.32

5.05

-0.01

h2

0.75

0.68

0.81

0.09

LTL

\({\sigma }_{u}^{2}\)

0.26

0.21

0.30

0.03

h2

0.26

0.22

0.30

0.03

RTL

\({\sigma }_{u}^{2}\)

0.27

0.23

0.32

-0.05

h2

0.29

0.24

0.33

0.05

LTW

\({\sigma }_{u}^{2}\)

0.08

0.07

0.09

0.02

h2

0.30

0.25

0.34

0.02

RTW

\({\sigma }_{u}^{2}\)

0.08

0.07

0.10

-0.04

h2

0.31

0.26

0.35

-0.04

VESIC_L

\({\sigma }_{u}^{2}\)

0.31

0.21

0.40

0.11

h2

0.14

0.10

0.18

0.11

VESIC_W

\({\sigma }_{u}^{2}\)

0.05

0.04

0.06

0.02

h2

0.17

0.13

0.21

0.02

TF

\({\sigma }_{u}^{2}\)

3.47E−04

2.70E−04

4.23E−04

-0.01

h2

0.20

0.15

0.24

-0.01

TV

\({\sigma }_{u}^{2}\)

3.95E−04

3.26E−04

4.63E−04

0.02

h2

0.32

0.27

0.37

0.03

MAD

\({\sigma }_{u}^{2}\)

14.68

10.33

19.03

0.01

h2

0.15

0.11

0.19

-0.01

MID

\({\sigma }_{u}^{2}\)

0.52

0.05

0.99

0.65

h2

0.04

0.01

0.10

0.37

TD

\({\sigma }_{u}^{2}\)

35.00

19.07

50.93

0.07

h2

0.30

0.17

0.43

0.07

SMN_ASPC

\({\sigma }_{u}^{2}\)

0.17

0.11

0.23

-0.12

h2

0.19

0.02

0.36

-0.05

BULL_FIT

\({\sigma }_{u}^{2}\)

7.51

5.41

9.60

0.11

h2

0.69

0.54

0.83

0.10

  1. VOL Ejaculate volume, VIG Spermatic vigor, TURB Spermatic vortex, MOT Rectilinear progressive sperm motility, SC Scrotal circumference, LTL Left testicular length, RTL Right testicular length, LTW Left testicular width, RTW Right testicular width, VESICL Seminal vesicle length, VESICW Seminal vesicle width, TV Testicular volume, TF Testicular format, MAD Percentage of sperm cells with major sperm defects, MID Percentage of sperm cells with minor sperm defects, TD Percentage of total sperm cells with sperm defects, BULL_FIT evaluation andrological bull's fitness, SMN_ASPC Evaluation of seminal aspect, REB All records of rebreeding of females, REBB Rebreeding of females that entered reproduction at two years old, REBA Rebreeding of precocity heifers, PP14 Pregnancy probability at 14 months, STAY Ability to remain productive in the herd. The SE for all heritability estimated was < 0.001