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Table 2 Number of pigs per batch, initial and final body weight, feed conversion ratio and mortality ratea

From: Managing variability in decision making in swine growing-finishing units

    

Production parameters

  

Number of pigs

IBW (kg)

FBW (kg)

FCR (kg/kg)

sqrtMORT

Company

N

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Mean

SD

A

207

1433

750

19.2

1.6

104.8

4.5

2.70

0.13

2.01

0.60

B

97

802

433

21.0

1.4

106.7

4.8

2.83

0.17

1.68

0.51

C

99

1564

918

18.8

1.9

106.4

3.4

2.89

0.22

2.61

0.64

D

99

2125

1309

16.5

1.8

108.2

2.6

2.70

0.09

1.62

0.40

E

74

1763

773

17.4

1.8

107.1

3.1

2.62

0.10

1.84

0.44

F

33

1218

689

20.1

5.4

106.9

3.6

2.62

0.09

1.82

0.47

G

79

1673

1041

20.7

2.0

119.7

3.5

2.90

0.11

1.90

0.37

ODb

607

1496

941

18.8

2.8

106.3

4.1

2.74

0.17

1.96

0.63

  1. aData from 688 batches in 404 growth-finishing farms belonging to seven integrated pigs companies. SD: standard deviation
  2. bOD - database of companies A to F. Initial body weight (IBW) refers to pig live weight when entering the GF unit. Final body weight (FBW) was the live weight recorded in the GF unit prior to transportation to the slaughter facility. Feed conversion ratio (FCR) was obtained dividing the total feed delivered to each batch (kg) by the difference between the total kilograms of pigs sent to slaughter and the total kilograms of pigs that entered a GF batch. Finally, square root of the mortality rate (sqrtMORT) was calculated as the square root of the number of nursery pigs that entered the GF unit minus the number of pigs transported for slaughter divided by the number of pigs that entered the GF unit