. 2021 Feb 2;7(2):440–449. doi: 10.1016/j.aninu.2020.11.006

Table 4.

Effects of additives and NE challenge on serum IgA of broilers on day 16 and 21.¹

Item	UCC	NE challenged²					SEM	P-value
Item	UCC	CHC	BAC	SMP	SMF	SHM	SEM	P-value
IgA, mg/mL
d 16	0.18^b	0.27^a	0.32^a	0.30^a	0.32^a	0.30^a	0.032	0.033
d 21	0.17^c	0.22^bc	0.25^b	0.23^b	0.26^ab	0.31^a	0.019	0.001

NE = necrotic enteritis; IgA = immunoglobulin A.

^{a – c}Values in a row with no common superscripts differ significantly (P < 0.05). Mean values are based on 2 birds per replicate and 13 replicates per treatment.

UCC, unchallenged control; CHC, challenged control; BAC, zinc bacitracin; SMP, a blend of short-chain fatty acids (SCFA), medium-chain fatty acids (MCFA) and phenolic compound; SMF, a blend of buffered SCFA with MCFA; SHM, a blend of buffered SCFA with a high concentration of MCFA.

NE challenged birds were gavaged with Eimeria spp. on d 9 and C. perfringens on d 14.