Growth performance and total tract digestibility of nutrients for weanling pigs are improved by an exogenous xylanase and a stimbiotic regardless of maternal xylanase consumption

Acosta, Jessica P.; Espinosa, Charmaine D.; González-Ortiz, Gemma; Stein, Hans H.

doi:10.1186/s40104-025-01205-w

Journal of Animal Science and Biotechnology

Table 3 Analyzed nutrient composition of experimental diets (as-fed basis)

From: Growth performance and total tract digestibility of nutrients for weanling pigs are improved by an exogenous xylanase and a stimbiotic regardless of maternal xylanase consumption

Item	Phase 1			Phase 2			Phase 3
Item	Control	Xylanase^a	Stimbiotic^b	Control	Xylanase	Stimbiotic	Control	Xylanase	Stimbiotic
Gross energy, kcal/kg	3,997	3,997	3,982	3,881	3,892	3,907	3,833	3,849	3,887
Dry matter, %	89.66	89.61	89.40	86.80	87.45	87.22	86.52	86.30	87.03
Ash, %	6.00	6.11	5.84	4.59	4.80	5.82	5.15	5.52	5.16
Acid hydrolyzed ether extract, %	4.21	3.80	3.88	3.10	2.93	3.02	4.59	4.71	5.55
Crude protein, %	20.33	20.66	20.54	17.10	17.45	17.99	15.91	16.03	16.37
Starch, %	29.59	29.20	29.34	38.34	37.47	36.27	40.75	40.40	40.83
Insoluble dietary fiber, %	9.90	10.10	9.90	11.40	11.30	11.10	12.80	12.80	12.70
Soluble dietary fiber, %	3.30	3.40	3.30	2.80	2.50	2.30	1.90	1.80	1.40
Total dietary fiber, %	13.20	13.50	13.20	14.20	13.80	13.40	14.70	14.60	14.10
Indispensable amino acids, %
Arg	1.25	1.23	1.26	1.08	1.12	1.21	1.00	1.03	1.04
His	0.52	0.50	0.52	0.45	0.45	0.46	0.42	0.42	0.43
Ile	0.95	0.91	0.96	0.79	0.79	0.80	0.71	0.69	0.70
Leu	1.68	1.62	1.68	1.46	1.46	1.51	1.40	1.36	1.38
Lys	1.54	1.53	1.55	1.22	1.21	1.30	1.09	1.10	1.17
Met	0.50	0.49	0.50	0.35	0.37	0.40	0.31	0.32	0.35
Phe	0.99	0.96	1.00	0.86	0.86	0.88	0.79	0.78	0.80
Thr	0.84	0.87	0.88	0.70	0.74	0.75	0.65	0.68	0.71
Trp	0.23	0.22	0.22	0.17	0.18	0.20	0.15	0.17	0.16
Val	0.98	0.98	0.98	0.85	0.84	0.90	0.79	0.76	0.77
Dispensable amino acids, %
Ala	1.04	1.01	1.00	0.84	0.86	0.85	0.83	0.82	0.82
Asp	2.07	2.03	1.90	1.74	1.78	1.90	1.56	1.58	1.62
Cys	0.31	0.29	0.26	0.28	0.28	0.30	0.26	0.27	0.28
Glu	3.49	3.43	3.30	3.05	3.14	3.40	2.87	2.87	2.94
Gly	0.94	0.92	0.91	0.71	0.73	0.74	0.67	0.68	0.68
Pro	1.17	1.11	1.03	1.04	1.01	1.00	0.99	0.94	0.97
Ser	0.80	0.82	0.75	0.69	0.76	0.78	0.66	0.71	0.73
Tyr	0.64	0.63	0.60	0.55	0.57	0.56	0.49	0.52	0.53
Minerals
Ca, %	2.27	1.92	2.14	1.37	1.01	1.33	1.03	0.92	0.94
P, %	1.40	1.34	1.57	1.11	1.12	1.09	0.71	0.76	0.87
K, %	1.71	1.59	1.78	1.54	1.80	1.66	0.95	0.95	1.13
Mg, %	0.31	0.28	0.31	0.29	0.33	0.29	0.21	0.20	0.23
Na, %	0.39	0.37	0.42	0.23	0.25	0.27	0.17	0.18	0.23
Cu, mg/kg	197.81	120.34	107.43	90.52	92.54	89.55	64.76	60.87	66.59
Fe, mg/kg	410.31	381.84	437.13	312.18	332.70	352.69	225.82	225.53	227.05
Mn, mg/kg	228.78	207.76	227.25	181.26	206.79	199.30	152.33	146.98	164.10
Zn, mg/kg	469.96	502.10	481.37	279.58	310.95	296.05	187.09	185.42	275.31
Xylanase activity, BXU^c/kg	< 2,000	13,700	16,600	< 2,000	15,000	23,700	< 2,000	13,900	17,800

^aXylanase: Econase XT 25 (160,000 BXU/g); AB Vista, Marlborough, UK
^bStimbiotic: Signis; AB Vista, Marlborough, UK
^cBXU is the amount of enzyme that will release 0.06 micromoles of reducing sugars (xylose equivalents) from beechwood xylan per min at pH 5.3 and 50 °C. None of the control diets exceeded the detection limit (2,000 BXU/kg)

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ISSN: 2049-1891

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