The index herd with PMWS in Sweden: Presence of serum amyloid A, circovirus 2 viral load and antibody levels in healthy and PMWS-affected pigs

Table 4 Mean levels of Serum amyloid A (SAA) in serum (mg per L).

Day after arrival	PMWS pigs	Healthy pigs, low level of maternal antibodies	Healthy pigs, high level of maternal antibodies
	(n = 4)	(n = 17)	(n = 17)
Day 9	424 ± 475	148 ± 306	115 ± 250
Day 17	24 ± 17	27 ± 33	57 ± 76
Day 23	111 ± 114	134 ± 304	94 ± 134
Day 34	39 ± 26	57 ± 62 *	17 ± 8 *
Day 43	92 ± 120	71 ± 109	31 ± 41
Day 55	-	38 ± 75	42 ± 87

Mean values within day indicated with *differ (p < 0.05) from each other
All pigs that developed PMWS were dead at day 55. Pigs without clinical signs of PMWS were grouped as having low or high maternal immunity to PCV2. All these pigs were alive at day 55

ISSN: 1751-0147