. 2020 Aug 3;14(11):2783–2793. doi: 10.1038/s41396-020-0730-3

Table 1.

Zinc fractions (total, free, protein-bound) in colon digesta of piglets fed diets with added zinc oxide at 40 ppm (40ZnO), 110 ppm (110ZnO), 2500 ppm (2500ZnO), or 110 ppm Zn-Lysinate (110ZnLys) over a period of 3 weeks.

Item	40ZnO	110ZnO	2500ZnO	110ZnLys	P value
ppm dry matter
Total zinc	506 ± 52^a	1013 ± 40^a	11730 ± 862^b	938 ± 77^a	<0.001
Free zinc	19 ± 3^a	25 ± 6^a	211 ± 79^b	20 ± 2^a	0.003
Protein-bound zinc	8 ± 1^a	15 ± 5^a	142 ± 29^b	12 ± 3^a	<0.001

Data are given as means ± SE (n = 10/group).

Different superscripts indicate significant (P < 0.05, Tukey post hoc test) differences.