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Table 1 lnformation on farrow-to-finish farms surveyed in this study

From: Swine influenza virus infection in different age groups of pigs in farrow-to-finish farms in Thailand

Farm

A

B

C

D

E

F

Sampling date

2008/1/29d

2008/6/9, 10/1, 2009/1/14, 7/1, 11/18

2008/6/23, 10/13, 2009/1/16, 7/2, 11/20

2008/6/16d, 10/6, 2009/1/15, 7/3, 11/19

2008/7/4, 11/15, 2009/1/8

2008/11/10, 2009/1/9, 7/10

Province

Ratchaburi

Saraburi

Saraburi

Saraburi

Singburi

Singburi

Number of pigsa: Sow

4000

2200

1100

120

20

20

Boar

100

12

30

30

1

1

Fattening

6000

12000

4900

160

60

60

Pigletb

6000

5700

2900

200

40

70

Purchase (Introduction of pigs from other farm or company)

A few pigs every few years

Piglet for breeding (8-wk-old): 20-25/week

Boar: 1-2/month Gilt(5,6-month-old): 50/week

20 boars in 2004

A few boars and sows in 2006, Three sows in 2009

A few sows in 2003, One boar in 2005

Purchased from:

Domestic farm

Domestic farm

Domestic farm

Denmark

Domestic farm

Domestic farm

Shower-in facilities for car/human

Yes/Yes

Yes/Yes

Yes/No

No/No

No/No

No/No

Presence of other domestic animals

Dog, cat

Dog

No

No

Cattle, dog, cat, crocodile

Chicken, dog

Period (age; week-old) forc:

suckling stage

0-3

0-3

0-4

0-4

0-3

0-4(6)

weaning stage

3-9

3-8

4-11

4-8

3-6

4(6)-8

fattening stage

9-24

8-24

11-24

8-24

6-24

8-24

Vaccination for:

Aujeszky's disease (AD), Foot and Mouth disease (FMD), Parvo virus (PV), Swine fever (SF)

AD, Atrophic rhinitis (AR), FMD, Porcine reproductive and respiratory syndrome (PRRS), Porcine circovirus (PCV), Mycoplasma

AD, FMD, PRRS, PV, SF, Leptospirosis

FMD, PV, SF

AD, PRRS, SF, Mycoplasma

SF

  1. aAveraged numbers throughout our surveillance
  2. b'Piglet' was defined as a group of pigs in suckling and weaning stages
  3. cProduction system for rearing piglets
  4. dSerum were not collected