Table 3. Effects of vitamin supplementation levels in gestation diets on growth performance during gestation

	Treatment¹⁾				SEM	p-value
	V1	V3	V6	V9	SEM	Lin.	Quad.
Body weight (kg)
At mating	223.76	223.23	223.73	223.23	4.388	0.978	0.998
70 days	250.54	242.77	241.95	243.87	3.899	0.576	0.549
90 days	259.04	252.05	253.00	254.14	3.878	0.711	0.616
110 days	269.69	267.59	267.21	268.68	4.157	0.932	0.838
BW gain (0-110 days)	45.90	44.36	43.48	45.45	1.455	0.101	0.965
Backfat thickness (mm)
At mating	18.65	18.35	18.46	18.46	0.674	0.941	0.912
70 days	20.35	22.70	21.04	23.14	0.899	0.432	0.943
90 days	21.15	23.32	23.00	26.80	0.971	0.067	0.673
110 days	22.50	22.95	24.32	26.60	0.960	0.129	0.639
BF gain (0–110 days)	3.85	4.60	5.86	8.14	0.533	0.081	0.165

Treatment: V1, corn-soybean meal (SBM) based diet with 1× National Research Council (NRC, 2012) vitamin requirement; V3, corn-SBM-based diet with 3× NRC (2012) vitamin requirement; V6, corn-SBM-based diet with 6× NRC (2012) vitamin requirement; V9, corn-SBM-based diet with 9× NRC (2012) vitamin requirement.
Lin., linear; Quad., quadratic; BW, body weight; BF, backfat thickness.