Table 6.

Added vitamin and trace mineral concentrations in midfinishing diets (55 to 100 kg)

	Count, N1	Weighted average2	Average	Ratio to NRC	Standard deviation	Low	25%	Median	75%	High
Vitamins
A, IU/kg	37	3,870	3,394	2.61	1,399	1,500	2,304	2,998	4,116	6,615
D, IU/kg	37	1,061	1,045	6.97	448.6	487.7	826.9	992.3	1,085	2,737
E, IU/kg	37	33.3	25.7	2.34	11.7	5.51	19.8	23.0	30.8	59.8
K, mg/kg	37	1.79	1.89	3.79	1.34	0.51	1.20	1.65	2.06	8.69
Riboflavin, mg/kg	37	4.60	4.22	2.11	0.99	1.65	3.53	4.13	4.95	6.39
Niacin, mg/kg	37	27.7	26.9	0.90	6.61	8.27	22.4	26.9	30.0	44.1
Pantothenic acid, mg/kg	37	16.6	14.4	2.06	3.67	5.37	12.4	13.8	17.6	24.9
B12, μg/kg	37	20.9	18.6	3.73	4.55	8.27	15.6	18.2	21.4	29.9
Biotin, mg/kg	1	0.10	0.10	2.00	–	–	–	–	–	–
Thiamin, mg/kg	3	1.20	2.49	2.49	1.13	1.00	1.88	2.76	3.24	3.72
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	1.98	1.84	1.84	0.16	1.68	1.76	1.84	1.92	2.00
Trace minerals
Copper, mg/kg	37	50.5	46.5	14.3	58.9	3.05	11.0	13.3	65.0	172.0
Manganese, mg/kg	37	24.0	24.8	12.4	7.19	7.44	22.0	25.3	29.6	40.1
Selenium, mg/kg	37	0.27	0.26	1.71	0.05	0.07	0.22	0.27	0.30	0.30
Zinc, mg/kg	37	98.1	89.1	1.78	20.2	26.6	82.6	90.0	100.0	131.2
Iodine, mg/kg	37	0.43	0.33	2.36	0.21	0.07	0.21	0.25	0.37	1.02
Iron, mg/kg	37	71.7	77.7	1.73	19.2	26.6	66.6	80.0	91.8	110.1
Cobalt,3 mg/kg	1	0.36	0.36	–	–	–	–	–	–	–

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.