Table 8.

Expression of behaviors of pigs in the afternoon (1400 to 1600 h) according to days in relation to challenge^1,2

	Days in relation to challenge				P-value
Observations	-13	+1	+2	+3	TRT4	DAY5	TRT × DAY
Positive contacts	1.61A	1.25A	1.90A	0.23B	0.632	0.015	0.894
Exploration	1.99A	0.85B,C	1.06A,B	0.18C	0.681	0.002	0.740
Feeding	15.60A	11.29A	13.18A	2.96B	0.786	0.003	0.159
Others	1.74	1.12	2.22	0.45	0.648	0.063	0.817
Lying laterally without contact	0.62B	0.74B	3.35A	2.76A	0.040	0.002	0.497
Lying ventrally without contact	2.66B	2.89B	7.95A	7.73A	0.835	< 0.001	0.875
Lying laterally with contact	21.16A	8.70B	13.84A	13.69A	0.528	0.038	0.731
Lying ventrally with contact	30.14B	37.58AB	27.35B	45.02A	0.399	0.035	0.541

^A–CMeans within rows without common letters differ by the Means-Tukey adjustment test (P < 0.05).

¹Data are mean (n = 8) expressed in proportion of total number of observations (active + inactive). For the statistical analysis, data were previously transformed using square root transformation.

²Drinking and walking behaviors are not shown, as they were not modified by any experimental treatment.

³No differences were found between d –2 and –1 before the inoculation, so these data were pooled and named as –1.

⁴Treatment effect. Treatments: CON, plain diet without additives; PRO, plain diet supplemented with 1 kg/t of Proporc (10⁹ cfu/kg of feed of Bacillus licheniformis); BUT, plain diet supplemented with 3 kg/t of Gustor BP70 (2.1g of partially protected sodium butyrate salt/kg of feed).

⁵Inoculation effect (measured as difference in days before (–1) and after (1, 2, 3) the infection).