. 2017 Dec 19;31(3):403–409. doi: 10.5713/ajas.17.0718

Table 3.

Comparative effects of lipid-coated ZnO (Shield Zn [SZ]) vs uncoated ZnO on morphology of the gastrointestinal tract of weanling pigs

Variable	ZnO¹⁾		SZ¹⁾			SEM	p-value

	100 (NC)	2,500 (PC)	100	200	400		Contrast		Regression³⁾

							NC²⁾	PC²⁾	L	Q
Duodenum
VH (μm)	302	280	280	272	278	11	0.056	0.813	0.948	0.983
CD (μm)	246	253	276	290	273	14	0.046	0.111	0.701	0.609
VH:CD	1.22	1.15	1.02	0.96	1.02	0.06	0.002	0.027	0.827	0.713
Jejunum
VH (μm)	261	238	228	240	232	12	0.048	0.710	0.923	0.985
CD (μm)	206	191	184	199	191	11	0.218	0.986	0.777	0.889
VH:CD	1.27	1.28	1.25	1.22	1.22	0.07	0.558	0.501	0.960	0.791
Ileum
VH	222	202	213	240	209	12	0.951	0.178	0.593	0.434
CD	163	170	175	190	167	11	0.282	0.597	0.411	0.312
VH:CD	1.39	1.20	1.21	1.29	1.26	0.06	0.074	0.451	0.744	0.833
Colon (cell density [cells/mm²])
Goblet cell	956	980	920	962	819	69	0.490	0.325	0.314	0.271

NC, negative control; PC, positive control; SEM, standard error of mean; L, linear; Q, quadratic; VH, villus height; CD, crypt depth.

¹⁾

The numeral under the column heading indicates the dietary Zn concentration in mg/kg provided by the Zn supplement. Data are the means of 8 piglets.

²⁾

Total SZ (SZ-100, -200, and -400) vs NC and total SZ vs. PC, respectively.

³⁾

Linear and quadratic regressions on the dietary SZ concentration within the total SZ group piglets were analyzed separately.