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Table 2 M. synoviae antibody of native broilers infected by infectious synovitis in China

From: Epidemiological investigation of Mycoplasma Synoviae in native chicken breeds in China

Group

Breed

No. of farma

Age (day)

Clinical signs

Type of sample

No. of positive M. synoviae antibody

Positive proportion

Sampling time

A1

Tianlu

8

35–60

Arthrocele

Serum

79/103

76.70%

2012.01–2014.12

A2

Tianlu

35–60

NO

Serum

88/131

67.18%

2012.01–2014.12

B1

San Huang

17

30–75

Arthrocele

Serum

208/299

69.57%

2010.10–2014.12

B2

San Huang

30–75

NO

Serum

78/252

30.95%

2010.10–2014.12

C1

Silky

5

31–63

Arthrocele

Serum

59/62

95.16%

2012.06–2014.12

C2

Silky

31–63

NO

Serum

30/80

37.5%

2012.06–2014.12

D1

Hua

9

40–71

Arthrocele

Serum

140/155

90.32%

2012.02–2014.12

D2

Hua

40–71

NO

Serum

81/128

63.28%

2012.02–2014.12

E1

Qingyuan Ma

14

29–62

Arthrocele

Serum

197/240

82.08%

2011.03–2014.12

E2

Qingyuan Ma

29–62

NO

Serum

112/238

47.06%

2011.03–2014.12

Total

53

   

1072/1696

63.20%

2010.10–2014.12

  1. aThirty-two blood samples were collected from each farm, including 16 samples from sick chickens with typical clinical signs and 16 samples from chickens without any clinical symptoms