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Table 8 Information on study farms, studied animals and straw provisions. Identical Farm number (within farm id) indicates that the farm produced both grower and finisher pigs. C indicates Control treatment and ES Extra Straw treatment [5]

From: Impact of amount of straw on pig and pen hygiene in partly slatted flooring systems

Farm

Age category

No. pigs produced /year

No. of days in experiment

No. pigs in experiment

No. of pens

Pen Size (m2)

No. of pigs / pen

Area/pig (m2)

Mean

straw length (range).cm

Straw ration. g/pen

Straw ration. g/pig

No. of missing daily obs.

C

ES

Total

Slatted

C

ES

C

ES

(%)

G1

Growers

18,000

35

286

12

12

4.98

1.19

12

0.41

6.6 (1–40.5)

100 (day 1–15)

200 (day 16–24)

600(day 25–35)

200

500

1000

8.3

16.7

50.0

16.7

41.7

83.3

0

(0)

G2

Growers

7000–7500

34

427

22

17

5.39

1.06

10–11

0.49–0.54

11.9 (7.5–88.5)

47

94

4.3–4.7

8.5–9.4

1

(3)

G4

Growers

7500

43

360

12

12

4.01

1.08

12 (9)a

0.33–0.45

5.3 (1–31)

46

92

3.8–5.1a

7.6–10.2a

2 (5)

F2

Finishers

7000–7500

74

444

21

21

10.49

2.68

11

0.95

11.9 (7.5–88.5)

132

264

12

24

11b (15)

F3

Finishers

2300

70

195

11

9

9.7

1.8

11

0.88

10.4 (1–44)

100

200

9.1

18.2

2 (3)

F4

Finishers

7500

74

209

12

12

9.05

2.25

9

1.00

6.9 (5.5–51.5)

110

220

12.2

24.4

10c (14)

F5

Finishers

10,000

68

408

20

20

10.49

2.68

10

0.95

8.4 (1.5–44.5)

58

115

5.8

11.5

14d (21)

  1. aIn Farm 4 three pigs per pen were removed after 5 weeks to comply with national legislation according to Swedish board of Agriculture regulations and general advice (SJVFS 2017:25) on the holding of pigs in agriculture
  2. b2 weekends and one week
  3. c3 weekends
  4. d7 weekends