Investigation on eggshell apex abnormality (EAA) syndrome in France: isolation of Mycoplasma synoviae is frequently associated with Mycoplasma pullorum

Table 3 M. synoviae detection by PCR in tracheal, cloacal, albumen and egg yolk swabs

Samples	ALT^a		FC^a		Total samples
Samples	Farms	Samples	Farms	Samples	Total samples
Trachea	4/4^b (100%)	32/54^c (59.3%)	19/20^b (95.0%)	289/490^c (59.0%)	321/544^c,d (59.0%)
Cloaca	NS	NS	10/14 (71.4%)	39/371 (10.5%)	39/371^e (10.2%)
Albumen	1/1 (100%)	3/16 (18.8%)	1/5 (20.0%)	1/95 (1.1%)	4/111^f (3.6%)
Egg yolk	1/5 (0.0%)	0/15 (0.0%)	1/5 (20.0%)	1/95 (1.1%)	1/110^f (0.9%)
Total	5/5 (100%)	35/85 (41.2%)	20/20 (100%)	330/1051 (31.4%)	365/1136 (32.1%)

^aALT alternative systems (barn, free-range, organic), FC furnished cages
^b number of MS-positive farms/number of sampled farms (percentage of positive farms)
^c number of MS-positive samples/total number of samples (percentage of positive samples)
^d,e,f results with different letters are statistically different (P < 0.001)
NS not sampled

ISSN: 1746-6148