Table 1.

Animal performance in Salmonella and ETEC K88 trials.

	Treatmentsa				P-value
	CN	CP	NN	NP	RSDb	Challenge	Probiotic	Interaction
TRIAL 1: Salmonella
BWc (kg)
Initial	7.88	7.88	7.95	7.87	0.131	0.590	0.502	0.516
Final	9.77	9.44	10.91	11.15	0.645	<0.001	0.861	0.318
ADFId (g/d)
Pre-inoculatione	179	170	183	183	42.0	0.659	0.812	0.812
Post-inoculationf	353	330	458	513	70.0	<0.001	0.598	0.216
ADGg (g/d)
Pre-inoculatione	94	58	90	103	43.8	0.290	0.539	0.214
Post-inoculationf	156	145	288	345	62.0	<0.001	0.399	0.215
TRIAL 2: ETEC K88
BWc (kg)
Initial	6.80	6.77	6.72	6.78	0.553	0.883	0.973	0.855
Final	8.74	7.78	8.25	8.35	1.078	0.937	0.184	0.271
ADFId (g/d)
Pre-inoculatione	151	84	115	130	42.1	0.787	0.165	0.035
Post-inoculationf	283	231	270	278	75.3	0.610	0.510	0.378
ADG g (g/d)
Pre-inoculatione	36	–11	23	10	50.5	0.865	0.186	0.434
Post-inoculationf	200	119	163	173	76.3	0.808	0.294	0.183

^aTreatments: CN, challenged + no probiotic; CP, challenged + probiotic; NN, no challenge + no probiotic; NP, no challenge + probiotic.

^bResidual standard deviation.

^cBody weight.

^dAverage Daily Feed Intake.

^eExperimental days 0 to 7 for Trial 1 and 0 to 4 for Trial 2.

^fExperimental days 8 to 16 (0 to 8 PI) for Trial 1 and 5 to 14 (0 to 9 PI) for Trial 2.

^gAverage Daily Gain. n = 8 for groups CN and CP, n = 4 for groups NN and NP.