Table 5.

Effect of different doses of chestnut tannins (T−: 0 mg/kg, T+: 500 mg/kg and T++: 2,000 mg/kg) added to a corn-soy based diet or wheat-palm oil-rapeseed based diet on apparent fecal digestibility coefficients (%) of gross energy (aDCGE), crude fat (aDCCF), crude protein corrected for uric acid excretion (aDCCP-UA), on apparent metabolizable energy corrected for nitrogen retention (AMEn, Kcal/kg), glucose (mg/dL), non-esterified fatty acids (NEFA, mg/dL), and triglycerides (TG, mg/dL) of broiler chickens at 25 d of age (n = 12).

	Corn			Wheat			P1			SEM
	T−	T+	T++	T−	T+	T++	D	T	D*T
digestibility
aDCGE	78.44a	77.71a	78.37a	66.90bc	65.13c	69.81b	<0.001	0.743	0.021	0.78
aDCCF	84.94	84.26	86.41	54.95	54.37	58.85	<0.001	0.081	0.677	1.64
aDCCP-UA	80.18	79.24	79.22	78.16	79.40	79.65	0.346	0.927	0.103	0.52
AMEn	3,437a	3,401a	3 430a	2,918bc	2,834c	2,980b	<0.001	0.742	0.020	0.15
blood
Glucose	251.92	261.04	266.81	258.27	254.73	268.37	0.927	0.298	0.760	5.21
NEFA	0.76	0.73	0.72	0.37	0.35	0.38	<0.001	0.884	0.778	0.03
TG	166.27	167.69	161.68	112.77	89.27	117.10	<0.001	0.435	0.224	8.28

^abcValues for a specific parameter within a diet with no letters or sharing a letter are not significantly different (P > 0.05).

¹D, Diet; T, tannin treatment.