Variation in susceptibility of different breeds of sheep to Mycobacterium avium subspecies paratuberculosis following experimental inoculation

Table 3 Analysis of disseminated infection after MAP inoculation as determined by culture of the liver

Breed	Total^a	Number of sheep with disseminated MAP infection	Occurrence (%)	Relative risk	(95% CI)	p value
Merino	33	13	39	1.00^b
White Suffolk × Merino	34	13	38	0.97	(0.53–1.77)	0.92
Border Leicester	33	3	9	0.23	(0.07–0.74)	0.01
Poll Dorset	36	5	14	0.35	(0.14–0.88)	0.03

ISSN: 1297-9716