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Table 1 Farm characteristics and study data of the five pig farms participating in the intervention study

From: Effectiveness and costs of interventions to reduce the within-farm Toxoplasma gondii seroprevalence on pig farms in the Netherlands

Farm # Farm type Farm size (# finishing pigs) Farm system Start date of intervention strategy # Blood samples before intervention (positive; total; %) # Blood samples after intervention (positive; total; %)
1 Finisher 3333 Conventional 25 Aug. 2017 138 ; 278 ; 50 65 ; 320 ; 20
2 Breeder-Finisher 600 Organic 15 Nov. 2017 16 ; 150 ; 11 1 ; 126 ; 1
3 Finisher 200 Organic 28 Dec. 2017 6 ; 83 ; 7a 4 ; 96 ; 4
4 Finisher 100 Organic 1 Dec. 2017 6 ; 48 ; 13 2 ; 24 ; 8
5 Finisher 350 Conventional 1 Mar. 2018 12 ; 71 ; 17 6 ; 47 ; 13
  1. aDue to the fact that the date of selection and the start date of the actual intervention strategy differed the estimated with-in farm seroprevalence turned out to be < 10 % for one farm in the year before the start of the implementation of the intervention strategy