Perinatal immuno/inflammatory responses in the presence or absence of bovine fetal infection

BMC Veterinary Research

Table 2 Percentage of calves within groups above reference thresholds for SAA, Hp, IgM and IgG values

Analyte	Threshold	CC	PM INF+	PM INF-
Analyte	(mg/L)	n = 21	n = 22	n = 89
SAA*	≥29.5	38.1	18.2	4.4
Hp	≥100	0	0	1.1
IgM	≥52.1	4.8	22.7	20.2
IgG	≥160	0	18.2	1.1

Reference thresholds for serum amyloid a and IgM from Jawor et al. [21], haptoglobin from Richter [22] and IgG from Sawyer [23]. SAA serum amyloid A; Hp haptoglobin; IgG sum of IgG₁ and IgG₂ classes; CC control calves; PM INF+ dead calves with infection in utero; PM INF- dead calves without in utero infection
*P ≤ 0.0001 Pearson’s chi-square

ISSN: 1746-6148