Table 4
Effect of dietary inclusion of citrus pulp, fish by-product, andBacillus subtilisfermentation biomass on apparent total tract digestibility (%) of nutrients in weanling pigs¹

Item	Citrus pulp, fish by-product, and Bacillus subtilisfermentation biomass, %			SEM2	P-values3
	0	2.5	5.0		Linear	Quadratic
Phase I (d 8–14)
DM	84.63b	84.99ab	85.49a	0.15	0.003	0.714
GE	83.56b	83.89ab	84.19a	0.12	0.005	0.890
CP	79.66	79.93	80.21	0.275	0.098	0.906
Ash	60.02b	60.76ab	61.72a	0.26	0.005	0.461
Ca	56.48	55.52	54.99	1.77	0.548	0.851
P	45.58	45.22	45.04	1.03	0.690	0.592
Phase II (d 22–28)
DM	81.87	82.04	82.77	0.35	0.106	0.535
GE	82.14	82.67	83.34	0.47	0.101	0.909
CP	75.95	76.78	77.39	0.61	0.127	0.885
Ash	54.98	55.34	55.57	0.75	0.595	0.947
Ca	52.08	52.34	52.53	1.38	0.821	0.983
P	46.96	47.57	48.67	1.52	0.448	0.894