Microbiological, pathological and histological findings in four Danish pig herds affected by a new neonatal diarrhoea syndrome

Table 5 Main histological findings in 51 diarrhoeic (D) and 50 non-diarrhoeic (ND) piglets

Histological findings	Herd 1		Herd 2		Herd 3		Herd 4		In total
	D	ND	D	ND	D	ND	D	ND	D	ND
	n=13	n=13	n=11	n=12	n=14	n=13	n=13	n=12	n=51	n=50
	(%)	(%)	(%)	(%)	(%)	(%)	(%)	(%)	(%)	(%)
Small intestine
Villous atrophy	62*	8	82*	8	71*	0	38	33	63	12
Neutrophil infiltration	38	38	55	25	21	15	23	50	33	32
Epithelial lesions	15	15	36*	0	21	0	8	8	20	6
Mucosal necrosis	8	0	0	0	0	0	15	0	6	0
Large intestine ¹
Epithelial lesions	17	15	55*	8	46	22	15	0	33	11
Mucosal necrosis	0	0	0	0	0	0	8	0	2	0

¹: In 2 diarrhoeic and 4 non-diarrhoeic piglets samples from colon were missing or autolytic and therefore not included in the analysis.
*denotes statistically significant positive associations with diarrhoea within herds (one-sided Fisher’s exact test (α=0,05)). Findings having a statisticallly significant association with diarrhoea across herds are presented in bold.

ISSN: 1746-6148