Association between average daily gain, faecal dry matter content and concentration of Lawsonia intracellularis in faeces

Table 1 Observed association between daily gain, faecal dry matter, Lawsonia intracellularis and porcine circovirus

Observation day				*Lawsonia intracellularis (log*₁₀ bacteria/g faeces)		Porcine circo virus type 2 (log₁₀ copies/g faeces)
(ADG interval)	DM%	No pigs	ADG (sd)^b	Positive (%)^c	Median^d	Positive (%)^c	Median^d
7 (day 1–7)	< 11.3	5	0.043 (0.385)	100	7.0	0	-
	11.3-18	36	0.456 (0.179)	89	5.4	31	6.0
	>18	106	0.538 (0.174)	90	5.5	17	6.9
13 (day 7–13)	< 11.3	9	0.144 (0.277)	100	6.3	33	6.1
	11.3-18	21	0.509 (0.183)	90	5.5	52	5.8
	>18	115	0.644 (0.195)	87	5.5	29	6.7
19 (day 13–19)	< 11.3	8	0.260 (0.322)	100	7.1	25	5.6
	11.3-18	27	0.698 (0.305)	89	6.9	33	5.5
	>18	101	0.803 (0.198)	77	5.7	37	6.0

^a The three DM% categories corresponds to watery (<11.3%), loose (11.3-18%) and normal (>18%) faecal consistency (Pedersen et al., 2011).
^b Average daily gain in kg/day (sd = standard deviation).
^c Detected by qPCR.
^d Only positive samples.

ISSN: 1751-0147