Skip to main content

Table 3 Descriptive statistics and genetic parameters

From: A promising resilience parameter for breeding: the use of weight and feed trajectories in growing pigs

Trait

Mean (sd)

Range

h2 (se)

c2 (se)

σa

σc

σe

Weightstart, kg

46.5 (7.5)

15.5–83.0

-

-

-

-

-

Weightend, kg

108.9 (12.2)

42.5–156.8

-

-

-

-

-

ADG, g/d

1,038 (155)

−16–1,840

16.5 (2.6)

33.6 (3.4)

67

96

117

AFI, g/d

2,326 (319)

1,006–3,619

33.8 (3.5)

22.0 (2.9)

201

162

229

FCR, g/g

2,240 (240)

1,380–3,200

22.9 (3.3)

21.8 (2.9)

111

108

172

A

243.4 (124.4)

36.2–945.5

6.8 (2.3)

24.7 (2.9)

33.5

63.9

106.5

B

6.75 (2.75)

2.73–28.27

8.9 (1.8)

15.4 (2.1)

0.81

1.07

2.36

k × 1,000

14.8 (6.0)

2.2–46.0

10.3 (2.3)

23.9 (2.9)

1.9

2.9

4.8

Fat depth, mm

9.4 (1.5)

4.8–17.4

52.7 (4.2)

5.6 (1.2)

1.2

0.4

1.1

Muscle depth, mm

82.6 (6.5)

59.3–105.1

36.6 (3.8)

10.9 (1.9)

3.9

2.1

4.7

lnvarweight

0.85 (0.72)

−2.01–3.61

11.0 (2.8)

24.3 (2.9)

0.22

0.32

0.52

lnMSEweight

1.08 (0.73)

−1.97–3.94

8.9 (2.5)

23.3 (2.8)

0.21

0.33

0.57

lnvarweight_standardized

−2.86 (0.85)

−5.67–0.45

12.1 (2.8)

17.0 (2.4)

0.30

0.36

0.73

Skewweight

−0.29 (0.44)

−2.08–1.48

2.9 (0.9)

10.4 (1.7)

0.08

0.14

0.41

Lag1weight

0.56 (0.17)

−0.05–0.97

6.2 (1.8)

19.2 (2.5)

0.04

0.08

0.15

Straightness

0.80 (0.08)

0.57–0.97

15.5 (2.9)

21.6 (2.7)

0.03

0.03

0.05

Mean speed

1.85 (0.19)

1.24–2.51

20.2 (3.2)

15.2 (2.2)

0.07

0.06

0.13

lnMSEFI

−1.16 (0.69)

−3.71–0.48

23.3 (3.4)

19.8 (2.6)

0.29

0.27

0.46

lnMSEdur

13.42 (0.64)

11.24–15.91

28.3 (3.3)

16.1 (2.3)

0.33

0.25

0.47

lnMSEn_visit

1.90 (0.68)

−0.78–4.25

20.7 (3.5)

17.9 (2.3)

0.33

0.30

0.56

QRFI, d

2.30 (2.67)

0.00–15.00

9.4 (2.1)

20.9 (2.7)

0.82

1.22

2.23

QRdur, d

2.28 (2.99)

0.00–15.00

16.2 (3.0)

18.0 (2.5)

1.2

1.3

2.4

  1. Parameters were estimated from pigs of 95–155 days of age. Heritability (h2) and common environmental effect (c2) estimates are given in percentages. Genetic parameters were estimated via single-step genomic evaluation, integrating both pedigree and genomic relationships. Additive genetic standard deviation (σa), common environmental standard deviation (σc) and residuals standard deviation (σe) are given in trait units. Estimates of the k-parameter of Gompertz modeling are multiplied by a factor 1,000 (k × 1,000). ADG: average daily gain; AFI: average feed intake; FCR: feed conversion ratio; A, B and k: Gompertz growth curve parameters; lnvarweight: natural logarithm of variance of observed versus predicted weights; lnMSEweight: natural logarithm of mean squared error of weight in function of age; lnvarweight_standardized: natural logarithm of variance of standardized weights; skewweight: skewness of observed versus predicted weight distribution; lag1weight: lag1 autocorrelation of observed versus predicted weight distribution; straightness: straightness index of weight in function of age after trajectory analysis; mean speed: mean speed of weight in function of age after trajectory analysis; lnMSEFI: natural logarithm of mean squared error of feed intake in function of age; lnMSEdur: natural logarithm of mean squared error of visit duration in function of age; lnMSEn_visit: natural logarithm of mean squared error of number of daily visits in function of age; QRFI: number of days with feed intake below 5% of quantile after quantile regression; QRdur: number of days with visit duration below 5% of quantile after quantile regression