Porcine ear necrosis is associated with social behaviours in weaned piglets

BMC Veterinary Research

Table 3 Proportion of time spent expressing specific behaviours during the two experimental periods and its association with the proportion of pigs affected by PEN at the end of the period (D30 for the period D9-D30 and D50 for the period D31-D50)

	Period D9-D30		Period D31-D50
	%^A	Β^B	%^A	Β^B
Oral manipulation of pen mates	0.08 ± 0.06	0.7	0.20 ± 0.24	7.1*
Aggression of pen mates	0.09 ± 0.06	−1.8	0.06 ± 0.07	−0.05
Nosing pen mates	1.03 ± 0.36	−5.1*	0.71 ± 0.29	−3.8*
Oral exploration of the enrichment materials	0.18 ± 0.16	−2.2	0.17 ± 0.16	−0.2

^AProportion of scans, at the pen level, spent expressing specific behaviours (mean ± SEM)
^BSlope coefficient of the model
* Indicates statistically significant coefficients (P < 0.05)

ISSN: 1746-6148