TABLE 4.

pH, ammonia-N, lactate, and volatile fatty acids (VFA) content and profile of feces collected from dogs fed diets supplemented with inorganic (IZ and IZ +) and organic (OZ and OZ +) Zn sources without (IZ and OZ) and with (IZ + and OZ +) the addition of a multi-enzymatic complex from the solid-state fermentation of Aspergillus niger.

	Diets1				SEM2	p-Value
	IZ	IZ +	OZ	OZ +		Zn	Enzyme	Zn × Enzyme
pH	6.9	6.7	6.6	6.8	0.11	0.363	0.742	0.174
Ammonia-N, mg/g	48.1	57.5	42.7	51.2	3.52	0.813	0.273	0.214
Lactate, mM	2.67	2.90	2.65	4.05	0.822	0.495	0.333	0.484
Total VFA, μmol/g	159	166	170	170	8.0	0.337	0.681	0.667
Acetate, μmol/g	87.4	92.3	94.9	93.4	4.17	0.305	0.690	0.447
Propionate, μmol/g	40.8	44.2	46.6	47.1	3.29	0.199	0.556	0.676
Iso-butyrate, μmol/g	2.08	2.21	2.20	2.53	0.191	0.265	0.245	0.604
Butyrate, μmol/g	22.5	20.7	20.6	20.6	2.39	0.683	0.722	0.716
Iso-valerate, μmol/g	2.59	2.84	2.80	3.12	0.157	0.140	0.080	0.817
Valerate, μmol/g	2.24	2.14	1.96	1.86	0.424	0.513	0.827	0.998
Iso-caproate, μmol/g	0.99	0.97	0.81	1.05	0.096	0.598	0.258	0.187
Caproate, μmol/g	0.19	0.22	0.21	0.20	0.020	0.807	0.517	0.386
Heptanoate, μmol/g	0.04	0.04	0.04	0.03	0.004	0.772	0.868	0.246

¹Twelve replicas per treatment.

²Standard error of the mean.