Table 2 Production data for a Swedish finishing herd (A) during the course of PMWS.

Health status regarding PMWS

Healthy

Suspected

Deemed

Healthy

Healthy

Healthy

Arrival of first and last batch in category

Jan05 -- Oct05

Nov05 -- Oct06

Nov06-Feb08

Mar08 -- Sept08

Number of batches

11

13

18

6

11

7

Source of finishing pigs:

Herd B (number of batches)

6/11

6/13

0/18

0/6

11¹/11

Norwegian

Open market (number of batches)

5/11

4/13

0/18

0/6

0/11

sow

Herd Z (number of batches)

0/11

3/13

18/18

6/6

0¹/11

pool

Batches not preceded by empty days (n)

3

5

4

0

0

0

Mean empty time between batches (days)

4.0 ± 2.8

3.8 ± 3.6

4.4 ± 2-9

5.8 ± 1.2

5.7 ± 0.6

4.3 ± 1.5

Pigs/batch (n)

385 ± 1

385 ± 1

385 ± 1

385 ± 1

389 ± 17

704.7 ± 4.3

Arrival weight (kg)

32.0 ± 3.4^a **

31.9 ± 4.0^a **

28.0 ± 3.6^b

27.4 ± 2.5^b

31.1 ± 1.8

29.0 ± 0.9

Slaughter weight carcas (kg)

87.9 ± 1.6

87.5 ± 2.3

89.3 ± 2.1

87.4 ± 1.8

86.1 ± 2.1

80.3 ± 2.6

Rearing period (days)

104.8 ± 3.5

102.5 ± 5.4

106.3 ± 4.6

103.8 ± 5.6

104.4 ± 5.8

98.4 ± 4.7

Percentage meat of carcas (%)

57.5 ± 0.8

57.8 ± 0.3

57.8 ± 0.7

57.3 ± 0.4

57.8 ± 0.7

56.3 ± 0.6

Mortality, mean (%)

1.8 ± 0.5^a **

2.2 ± 0.9^a *

2.9 ± 1.3^b

2.4 ± 1.0^b

0.5 ± 0.6

0.6 ± 0.5

Mortaliy, range (%)

1.1 -- 2.6

1.0 -- 3.6

1.0 -- 6.2

0.8 -- 3.4

0.0 -- 2.2

0.1 -- 1.4

Condemned at slaughter (%)

0.5 ± 0.5

0.5 ± 0.6

0.4 ± 0.5

0.6 ± 0-6

0.2 ± 0.2

0.5 ± 0.5

Daily weight gain (g)

910 ± 30

911 ± 35

914 ± 35

898 ± 30

886 ± 21

924.7 ± 32.3

Slaughter weight < 73 kg (%)

1.7 ± 1.0^a **

2.4 ± 1.5

3.6 ± 2.5^b

5.3 ± 3.4

3.5 ± 1.6

No records

Slaughter weight < 73 kg, range

0.5 - 3.5

0.3 -- 4.9

0.1 - 10.3

1.6 -- 9.9

0.5 -- 5.9

No records