Table 3.

Bursa of Fabricius and spleen weights of chickens fed an unsupplemented diet or a diet supplemented with virginiamycin or bacitracin methylene disalicylate with or without LPS^a.

		Organ weight (g/chicken, normalized to 100 g body weight)
		Bursa of fabricius			Spleen
Hours post-injection		0	6	24	0	6	24
PBS	Basal diet	0.213	0.151	0.173	0.095	0.090	0.100
	Virginiamycin	0.185	0.192	0.186	0.112	0.095	0.083
	BMDa	0.183	0.184	0.192	0.100	0.110	0.118
LPS	Basal Diet	0.181	0.212	0.162	0.096	0.141	0.112
	Virginiamycin	0.217	0.166	0.191	0.112	0.142	0.115
	BMD	0.162	0.199	0.142	0.102	0.128	0.112
SEM	Untreated vs. Treated	0.024	0.020	0.019	0.010	0.014	0.013
	PBS vs. LPS	0.014	0.011	0.011	0.006	0.008	0.007
	Basal vs. AGP	0.017	0.014	0.013	0.007	0.011	0.009
Pooled P-value	Untreated vs. Treated	0.588	0.320	0.431	0.747	0.080	0.407
	PBS vs. LPS	0.738	0.318	0.253	0.946	0.005	0.235
	Basal vs. AGP	0.449	0.796	0.462	0.290	0.971	0.453
	LPS × AGPb	0.383	0.118	0.365	0.994	0.463	0.354

^aBacitracin methylene disalicylate.

^bInteraction between AGP supplementation and LPS administration.