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Table 3 Seropositivity to L. intracellularis in commercial pigs by breed

From: Seroprevalence of Lawsonia intracellularis antibodies in intensive pig farms in China

Breed#

Number of pigs

Prevalence (95% CI)†

 

Positive

Tested

Apparent

True

Landrace

234

332

70 (59 to 82)

98 (94 to 100)a

Large White

199

287

69 (56 to 82)

96 (90 to 100)b,c

Meishan

97

211

46 (30 to 62)

60 (44 to 76)a,b

Jinhua

72

230

31 (17 to 46)

37 (22 to 52)c

Total

602

1060

57 (50 to 64)

77 (66 to 87)

  1. #Number of pigs tested, number of pigs positive to the L. intracellularis ELISA test and apparent and true prevalence of L. intracellularis seropositivity, by breed.
  2. †Number of pigs seropositive to L. intracellularis per 100 pigs tested.
  3. a-a,b-b,c-cTrue prevalence estimates with the same superscript significantly different at the alpha level of 0.05.
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BMC Veterinary Research

ISSN: 1746-6148

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