Table 5.

Added vitamin and trace mineral concentrations in early-finishing diets (23 to 55 kg)

	Count, N1	Weighted average2	Average	Ratio to NRC	Standard deviation	Low	25%	Median	75%	High
Vitamins
A, IU/kg	37	4,280	3,981	3.06	1,536	1,951	2,517	3,528	5,292	7,055
D, IU/kg	37	1,167	1,208	8.06	462.5	487.8	992.3	1,087	1,322	2,695
E, IU/kg	37	35.5	29.4	2.68	11.8	11.0	24.2	26.5	33.1	67.5
K, mg/kg	37	1.97	2.17	4.35	1.34	0.51	1.52	1.98	2.57	8.69
Riboflavin, mg/kg	37	5.03	4.92	1.97	0.98	3.30	4.50	4.96	5.44	7.20
Niacin, mg/kg	37	30.1	31.2	1.04	7.08	16.5	27.5	29.9	33.1	49.6
Pantothenic acid, mg/kg	37	18.9	16.9	2.11	3.60	10.6	15.1	16.5	18.9	24.9
B12, μg/kg	37	22.8	21.7	2.17	4.20	15.4	19.8	21.6	23.1	33.1
Biotin, mg/kg	1	0.10	0.10	2.00	–	–	–	–	–	–
Thiamin, mg/kg	3	1.30	3.21	3.21	1.65	1.00	2.34	3.68	4.32	4.96
Folic acid, mg/kg	2	0.46	0.26	0.86	0.24	0.02	0.14	0.26	0.38	0.50
Pyridoxine, mg/kg	2	1.99	1.95	1.95	0.05	1.90	1.92	1.95	1.97	2.00
Trace minerals
Copper, mg/kg	37	76.9	75.0	18.7	67.2	5.00	14.9	16.5	142.5	200.0
Manganese, mg/kg	37	26.0	28.1	14.0	6.70	9.92	25.0	30.0	31.4	40.1
Selenium, mg/kg	37	0.30	0.29	1.45	0.03	0.11	0.30	0.30	0.30	0.30
Zinc, mg/kg	37	106.4	102.2	1.70	19.1	39.9	100.0	102.9	110.1	150.0
Iodine, mg/kg	37	0.46	0.37	2.67	0.20	0.11	0.27	0.30	0.40	1.02
Iron, mg/kg	37	78.9	90.1	1.50	21.6	39.9	75.0	100.0	108.4	134.4
Cobalt,3 mg/kg	1	0.39	0.39	–	–	–	–	–	–	–

¹Respondents who added the nutrient to the diet from the 4,382,700 sows surveyed. Reported values are on a complete-feed basis.

²Sum of the products of the inclusion level multiplied by the size of the production (# of sows), divided by the total number of sows from the participants that provided added levels for that nutrient.

³ NRC (2012) does not provide a recommendation level of the nutrient.