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Table 1 Summary statistics and estimates (SE in parentheses) of heritability (h2) and litter effects (c2) for drinking and feeding traits in the finisher

From: Genetic parameters of drinking and feeding traits of wean-to-finish pigs under a polymicrobial natural disease challenge

Trait

No. records

Mean

SD

CV

h2 (SE)

c2 (SE)

Drinking

 ADWI, L/d

1,379

5.06

2.42

0.48

0.34 (0.08)

0.05 (0.04)

 ADWD, L/d

1,426

4.84

3.30

0.68

0.44 (0.07)

0.04 (0.04)

 WIDUR, min/d

1,525

14.73

4.37

0.30

0.54 (0.07)

0.06 (0.03)

 WInVisits

1,598

31.32

7.49

0.24

0.58 (0.06)

0.01 (0.03)

 WIRT, L/min

1,529

0.36

0.13

0.36

0.25 (0.06)

0.00 (0.00)

 WDRT, L/min

1,533

0.32

0.18

0.56

0.30 (0.07)

0.02 (0.03)

 ADWI|ADFI

1,379

–

–

–

0.42 (0.08)

0.02 (0.04)

 ADWD|ADFI

1,426

–

–

–

0.50 (0.07)

0.02 (0.03)

 WIDUR|FIDUR

1,525

–

–

–

0.56 (0.07)

0.05 (0.03)

 WInVisits|FInVisits

1,598

–

–

–

0.60 (0.06)

0.02 (0.03)

Feeding

 ADFI, kg/d

2,337

2.20

0.32

0.15

0.35 (0.05)

0.03 (0.03)

 FIDUR, min/d

2,337

59.51

11.49

0.19

0.49 (0.06)

0.04 (0.03)

 FInVisits

2,337

17.71

6.79

0.38

0.51 (0.05)

0.08 (0.03)

 FIRT, kg/min

2,337

0.038

0.009

0.25

0.45 (0.05)

0.03 (0.03)

 ADFI|ADWI

2,337

–

–

–

0.42 (0.06)

0.00 (0.00)

 ADFI|ADWD

2,337

–

–

–

0.42 (0.06)

0.00 (0.00)

 FIDUR|WIDUR

2,337

–

–

–

0.55 (0.07)

0.02 (0.03)

 FInVisits|WInVisits

2,337

–

–

–

0.46 (0.07)

0.12 (0.04)

Drinking

 VARWI

1,379

2.08

1.41

0.291

0.35 (0.07)

0.00 (0.00)

 VARWD

1,426

2.51

1.66

0.331

0.38 (0.08)

0.01 (0.04)

 VARWIDUR

1,525

4.84

2.06

0.151

0.25 (0.07)

0.13 (0.04)

 VARWInVisits

1,598

8.83

2.74

0.091

0.33 (0.07)

0.06 (0.04)

 VARWIRT

1,529

0.11

0.04

0.921

0.22 (0.06)

0.00 (0.00)

 VARWDRT

1,533

0.12

0.05

1.081

0.22 (0.07)

0.00 (0.00)

Feeding

 VARFI

2,337

0.50

0.10

0.671

0.08 (0.04)

0.02 (0.03)

 VARFIDUR

2,337

13.35

3.79

0.061

0.23 (0.05)

0.02 (0.03)

 VARFInVisits

2,292

6.12

2.46

0.141

0.47 (0.06)

0.08 (0.03)

 VARFIRT

2,292

0.058

0.006

2.501

0.00 (0.00)

0.04 (0.03)

Drinking

 OFFWI

1,308

0.12

0.08

0.67

0.27 (0.07)

0.05 (0.04)

 OFFWD

1,315

0.11

0.09

0.81

0.21 (0.07)

0.01 (0.04)

 OFFWIDUR

1,517

0.11

0.06

0.55

0.15 (0.06)

0.10 (0.04)

 OFFWInVisits

1,595

0.12

0.06

0.50

0.31 (0.07)

0.01 (0.03)

 OFFWIRT

1,515

0.11

0.07

0.64

0.17 (0.06)

0.00 (0.00)

 OFFWDRT

1,483

0.11

0.08

0.73

0.16 (0.06)

0.00 (0.00)

Feeding

 OFFFI

2,337

0.04

0.05

1.25

0.10 (0.04)

0.05 (0.03)

 OFFFIDUR

2,337

0.04

0.04

1.00

0.26 (0.05)

0.01 (0.02)

 OFFFInVisits

2,292

0.05

0.07

1.40

0.13 (0.04)

0.04 (0.03)

 OFFFIRT

2,292

0.05

0.13

2.60

0.13 (0.05)

0.01 (0.03)

  1. CV: coefficient of variation; ADWI: average daily water disappearance; ADWD: average daily water dispensed; WIDUR: average daily water intake duration; WInVisits: average number of daily water intake visits; WIRT: water disappearance rate; WDRT: water dispensed rate; ADFI: average daily feed intake; FIDUR: average daily feed intake duration; FInVisits: average daily feed intake visits; FIRT: feed intake rate; VARWI, VARWD, VARWIDUR, VARWInVisits, VARWIRT, VARWDRT, VARFI, VARFIDUR, VARFInVisits, and VARFIRT are the day-to-day variation for corresponding drinking and feeding traits; OFFWI, OFFWD, OFFWIDUR, OFFWInVisits, OFFWIRT, OFFWDRT, OFFFI, OFFFIDUR, OFFFInVisits, and OFFFIRT are the proportion of off days for corresponding drinking and feeding traits
  2. 1 Coefficients of day-to-day variation, calculated as the SD of VAR of the trait divided by the mean of the corresponding trait, e.g. \(\sqrt{{\mathrm{VAR}}_{FI}}/\mathrm{ADFI}\);