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Table 2 Logistic mixed regression model of T. gondii infection intensity in pigs from farrow-to-finish farms

From: Factors associated with Toxoplasma gondii infection in confined farrow-to-finish pig herds in western France: an exploratory study in 60 herds

Risk factor

Value

Odds-ratio (95 % CI)

P-value

Age class

<1 month – suckling piglets

1

 

1–2 months – weaned piglets

1.9 (1.0–3.2)

0.04

2–3 months – young fattening pigs

2.0 (1.3–3.2)

0.002

>3 months – fattening pigs

ns

0.29

Herd size (number of sows on a logarithmic scale)

Increase from the 25 % (139 sows) to the 75 % percentile (251 sows) of the observed distribution

0.87 (0.8–0.9)

0.04

Presence of dairy cattle

No

1

 

Yes

ns

0.24

Presence of a Danish entry facility

No

1

 

Yes

0.58 (0.3–0.9)

0.04

Use of specialised clothes inside production units

No

1

 

Yes

ns

0.77

Feed distribution method

Automatic feeder

1

 

Manual distribution

ns

0.38

  1. This model demonstrates an increased seropositivity risk in weaned piglets (1–2 months of age), and 2–3 months old animals as compared to suckling piglets. Seropositivity risk is lower in pigs from larger farms than in animals from small producers. Use of Danish entries on the farm decreases seropositivity risk as well. Presence of dairy production, the use of specialised clothes per room, and methods of feed distribution did not influence T. gondii seropositivity of pig bred in confined farms