Effects of a lipid-encapsulated zinc oxide supplement on growth performance and intestinal morphology and digestive enzyme activities in weanling pigs

Table 2 Effects of supplementations of native ZnO and lipid-encapsulated ZnO (LE ZnO) on growth and fecal consistency of weanling pigs ¹⁾

Variable	Dietary supplementation (ppm as Zn)										Contrast P-value
	Native ZnO		LE ZnO						SEM		LE ZnO vs.		Within LE ZnO
	100	2,500	8% lipid²⁾		10% lipid²⁾		12% lipid²⁾			P-value	Native ZnO		10% lipid vs.		100 vs. 250
			100	250	100	250	100	250			100	2,500	8%	12%
Growth performance
Initial BW (kg)	6.69	6.98	6.76	6.67	6.71	6.65	6.74	6.73	0.15	0.85	0.92	0.05	0.78	0.67	0.63
Final BW (kg)	9.63	9.89	9.65	9.35	9.52	9.18	9.65	9.73	0.20	0.32	0.65	0.14	0.52	0.15	0.34
ADG (g)	210	207	207	192	201	180	208	214	11	0.49	0.50	0.60	0.49	0.11	0.34
ADFI (g)	355	367	355	329	344	327	348	369	13	0.24	0.49	0.13	0.60	0.09	0.51
G:F	0.591	0.569	0.582	0.586	0.581	0.538	0.603	0.579	0.025	0.76	0.63	0.74	0.34	0.21	0.30
Fecal consistency score³⁾
Day 1	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Day 4	1.00	1.13	1.08	1.00	1.00	1.13	1.04	1.04	0.07^a
Day 7	1.04	1.00	1.04	1.00	1.04	1.13	1.13	1.17	0.07^a
Day 14	1.17	1.00	1.17	1.17	1.25	1.35	1.17	1.08
Overall⁴⁾	1.05	1.03	1.07	1.04	1.07	1.15	1.08	1.07	0.04	0.59	0.35	0.11	0.07	0.27	0.63

¹⁾Data are means of 6 pens in each dietary group.
²⁾Denotes the percentage of lipid (w/w) encapsulating the ZnO particle.
³⁾Scored according to a 3-notch integer scale: 1, well formed; 2, sloppy; 3, diarrhea.
⁴⁾P-values for the day and day × treatment were <0.01 and 0.71, respectively.
^aApplies to all day × treatment combinations.
BW, body weight; ADG, average daily gain; ADFI, average daily feed intake; G:F, gain:feed.

ISSN: 2055-0391