Table 8.

Added vitamin and trace mineral concentrations in gilt development diets

	Count, N1	Weighted average2	Average	Ratio to NRC3	Standard deviation	Low	25%	Median	75%	High
Vitamins
A, IU/kg	32	9,481	8,497	2.12	2,243	2,066	7,206	8,352	9,922	12,472
D, IU/kg	32	2,102	2,191	2.74	965.1	688.9	1,653	1,984	2,429	4,499
E, IU/kg	32	88.7	73.3	1.92	26.9	22.0	52.7	67.5	88.0	132.3
K, mg/kg	32	3.54	3.53	7.05	1.75	1.47	2.20	3.30	4.41	11.0
Thiamin, mg/kg	24	2.30	2.31	2.31	1.11	0.40	1.76	2.20	2.69	5.10
Riboflavin, mg/kg	32	8.27	7.72	2.06	1.88	3.86	5.93	7.94	9.92	10.8
Niacin, mg/kg	32	41.6	41.5	4.15	9.60	27.5	34.5	41.9	44.9	78.8
Pantothenic acid, mg/kg	32	28.9	26.5	2.21	6.65	13.9	21.0	26.4	33.0	38.8
Pyridoxine, mg/kg	30	3.68	2.80	2.80	1.38	0.45	1.66	3.03	3.56	5.99
B12, μg/kg	32	34.7	32.7	2.18	7.16	16.5	27.6	33.1	37.7	46.3
Biotin, mg/kg	30	0.35	0.26	1.30	0.12	0.07	0.20	0.23	0.33	0.65
Folic acid, mg/kg	30	2.39	1.91	1.47	1.48	0.55	1.16	1.39	1.98	8.27
Choline, mg/kg	27	431.6	446.9	0.36	258.8	100.0	267.8	420.0	550.0	1,471
C,4 mg/kg	1	209.5	209.5	–	–	–	–	–	–	–
Trace minerals
Copper, mg/kg	32	39.2	42.6	4.26	47.8	11.6	15.0	16.0	58.1	162.0
Manganese, mg/kg	32	38.4	38.3	1.53	11.0	8.27	30.0	40.0	50.0	51.2
Selenium, mg/kg	32	0.28	0.28	1.88	0.03	0.20	0.25	0.30	0.30	0.30
Zinc, mg/kg	32	125.9	125.5	1.25	45.0	60.0	107.2	122.0	125.0	325.0
Iodine, mg/kg	32	0.48	0.48	3.45	0.24	0.21	0.34	0.42	0.56	1.20
Iron, mg/kg	32	85.4	99.1	1.24	21.1	45.0	89.1	100.0	110.0	149.8
Chromium,4 mg/kg	19	0.17	0.15	–	0.05	0.07	0.10	0.20	0.20	0.20
Cobalt,4 mg/kg	1	0.39	0.39	–	–	–	–	–	–	–

¹Respondents who added the nutrient to the diet from the 4,182,600 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) Gestation recommendation.

⁴ NRC (2012) does not provide a recommendation level of the nutrient.