A comparative study of clinical manifestations, haematological and serological responses after experimental infection with Anaplasma phagocytophilum in two Norwegian sheep breeds

Table 2 Mean percentage of infected neutrophils observed in groups of ten lambs^$ of two different breeds of Norwegian sheep, Norwegian White (NW) and Old Norse (ON), respectively, inoculated with one variant of A. phagocytophilu m

Sheep breeds				Days after inoculation/challenge
	3	4	5	6	7	8	10	11	12	13	17
NW - 2008	43.2^#	45.4	36.4	41.2^#	37.8^##	32.0^#	22.6	3.3	<1	-	-
ON - 2008	35.1	44.4	35.8	32.8	25.0	11.7	2.1	1.9	<1
NW - 2009	7.9	57.4	45.2	39.8	35.2	27.6	3.3	<1	-
ON - 2009	-	-	-	-	13.0^a	26.0^b	47.5^b	24.5^c	32.1^d	22.9^d	3.8^b

^$ only seven ON-2009 lambs were infected
Two-sample t test (only 2008): p < 0.05^#, p < 0.001^##, ^a3 lambs, ^b4 lambs, ^c6 lambs, ^d7 lambs
The study was performed in two subsequent years, 2008 and 2009, respectively

ISSN: 1751-0147