Table 2. Nutrient Requirements Of Sheep: Daily Nutrient Concentration of the Rations (Expressed on 100-percent Dry Matter Basis). [a]

Body Wt. (lb.)	Avg Daily Gain (lb.)	Dry Matter (lb./head) [a]	Percent Body Weight	Total Protein (Percent)	TDN[b] Percent	Ca Percent	P Percent	Vitamin A (IU)	Vitamin E (IU)
Early-Weaned Lambs, Moderate Growth Potential
22	0.44	1.1	5.0	34.5	81.8	73	36	427	9
44	0.55	2.2	5.0	16.8	81.8	55	23	427	9
66	0.66	2.9	4.3	14.5	75.8	52	24	486	7
88	0.76	3.3	3.8	13.3	78.8	52	24	570	7
110	0.66	3.3	3.0	12.1	78.8	45	24	712	7
Early-Weaned Lambs, Rapid Growth Potential
22	0.55	1.3	6.0	27.0	84.6	85	38	361	9
44	0.66	2.6	6.0	17.3	76.9	54	23	361	9
66	0.72	3.1	4.7	15.5	77.4	52	23	455	7
88	0.88	3.3	3.8	15.4	75.8	58	27	570	7
110	0.94	3.7	3.4	14.3	75.7	57	30	635	7
132	0.77	3.7	2.8	14.3	75.7	49	27	762	7
Lambs Finishing, 4 to 7 Months Old
66	0.65	2.9	4.3	14.5	72.4	48	24	486	7
88	0.60	3.5	4.0	11.7	77.1	40	20	537	7
110	0.45	3.5	3.2	10.0	77.1	34	20	671	7
Replacement Ewe Lambs
66	0.50	2.6	4.0	15.8	65.4	54	23	542	7
88	0.40	3.1	3.5	12.6	64.5	42	19	606	7
110	0.26	3.3	3.0	9.1	57.6	33	15	712	7
132	0.22	3.3	2.5	9.1	57.6	30	15	854	7
154	0.22	3.3	2.1	8.8	57.6	30	18	997	7
Replacement Ram Lambs
88	0.73	4.0	4.5	13.5	62.5	0.43	0.20	470	6
132	0.70	5.3	4.0	11.0	64.1	0.34	0.17	532	5
176	0.64	6.2	3.5	9.5	62.9	0.31	0.16	606	5
220	0.55	6.6	3.0	8.8	63.6	0.24	0.15	712	5

Body Wt. (lb.)	Avg Daily Gain (lb.)	Dry Matter (lb./head) [a]	Percent Body Weight	Total Protein (Percent)	TDN[b] Percent	Ca Percent	P Percent	Vitamin A (IU)	Vitamin E (IU)
Ewes: Maintenance
110	0.02	2.2	2.0	9.5	54.5	0.18	0.18	1068	7
132	0.02	2.4	1.8	9.5	54.2	0.21	0.21	1175	7
154	0.02	2.6	1.7	9.6	57.6	0.19	0.19	1265	7
176	0.02	2.9	1.6	9.3	55.2	0.21	0.21	1296	7
198	0.02	3.1	1.5	9.3	54.8	0.21	0.21	1364	7
Ewes: Flushing 2 Weeks Prebreeding and First 3 Weeks of Breeding
110	0.22	3.5	3.2	9.4	60.0	0.34	0.17	671	7
132	0.22	3.7	2.8	9.2	59.0	0.32	0.16	762	7
154	0.22	4.0	2.6	9.0	57.5	0.30	0.18	822	7
176	0.22	4.2	2.4	9.1	59.5	0.31	0.17	895	7
198	0.22	4.4	2.2	8.9	59.1	0.30	0.18	961	7
Ewes: Nonlactating: First 15 Weeks of Gestation
110	0.07	2.6	2.4	9.6	57.7	0.23	0.19	904	7
132	0.07	2.9	2.2	9.3	55.2	0.24	0.17	972	7
154	0.07	3.1	2.0	9.3	54.8	0.26	0.19	1061	7
176	0.07	3.3	1.9	9.4	54.5	0.24	0.21	1139	7
198	0.07	3.5	1.8	9.4	54.3	0.26	0.23	1208	7
Ewes: Last 4 Weeks of Gestation (130-150 percent Lambing Rate Expected)
110	0.40	3.5	3.2	10.9	60.0	0.37	0.29	1214	7
132	0.40	3.7	2.8	10.8	59.5	0.35	0.30	1378	7
154	0.40	4.0	2.6	10.5	57.5	0.35	0.30	1490	7
176	0.40	4.2	2.4	10.5	57.1	0.33	0.31	1619	7
198	0.40	4.4	2.2	10.7	56.8	0.32	0.32	1738	7
Ewes: Last 4 Weeks of Gestation (180-225 percent Lambing Rate Expected)
110	0.50	3.7	3.4	11.6	64.8	0.38	0.19	1148	7
132	0.50	4.0	3.0	11.2	65.0	0.38	0.20	1275	7
154	0.50	4.2	2.7	11.2	66.7	0.40	0.24	1416	7
176	0.50	4.4	2.5	11.1	65.9	0.41	0.30	1545	7
198	0.50	4.6	2.3	11.1	65.2	0.43	0.30	1663	7
Ewes: First 6-8 Weeks of Lactation, Suckling Singles
110	-0.06	4.6	4.2	14.6	65.20	0.43	0.28	923	7
132	-0.06	5.1	3.8	13.7	64.7	0.39	0.27	1000	7
154	-0.06	5.5	3.6	13.3	65.5	0.36	0.27	1082	7
176	-0.06	5.7	3.2	13.3	64.9	0.37	0.28	1193	7
198	-0.06	5.9	3.0	13.2	64.4	0.36	0.29	1296	7
Ewes: First 6-8 Weeks of Lactation, Suckling Twins
110	-0.13	5.3	4.8	16.2	64.1	0.43	0.30	943	7
132	-0.13	5.7	4.3	15.6	64.9	0.40	0.30	1052	7
154	-0.13	6.2	4.0	14.8	64.5	0.39	0.29	1129	7
176	-0.13	6.6	3.8	14.5	65.1	0.38	0.29	1212	7
198	-0.13	7.0	3.6	14.1	65.7	0.36	0.29	1285	7

Body Wt. (lb.)	Avg Daily Gain (lb.)	Dry Matter (lb./head) [a]	Percent Body Weight	Total Protein (Percent)	TDN[b] Percent	Ca Percent	P Percent	Vitamin A (IU)	Vitamin E (IU)
Ewe Lambs: Nonlactating, First 1 ks Gestation
88	0.35	3.1	3.5	11.0	58.0	0.39	0.23	606	7
110	0.30	3.3	3.0	10.6	57.6	0.33	0.21	712	7
132	0.30	3.5	2.7	10.0	57.0	0.34	0.20	806	7
154	0.28	3.7	2.4	9.7	59.5	0.32	0.22	889	7
Ewe Lambs: Last Week of Gestation (100-120 percent Lambing Rate Expected)
88	0.40	3.3	3.8	12.4	63.6	0.42	0.21	1030	7
110	0.35	3.5	3.2	12.0	62.9	0.40	0.20	1214	7
132	0.35	3.7	2.8	11.3	64.9	0.38	0.22	1378	7
154	0.33	4.0	2.6	10.7	62.503	0.23	1497	895	7
Ewe Lambs: Last Week of Gestation (130-175 percent Lambing Rate Expected)
88	0.50	3.3	3.8	13.3	66.7	0.48	0.24	1030	7
110	0.50	3.5	3.2	12.9	65.7	0.49	0.23	1214	7
132	0.50	3.7	2.8	12.4	67.5	0.49	0.24	1378	7
154	0.47	4.0	2.6	11.5	62.5	0.45	0.25	1490	7
Ewe Lambs: First 6-8 Weeks of Lactation, Suckling Singles (Wean by 8 Weeks)
88	-0.11	3.7	4.2	15.1	67.5	0.35	0.24	919	7
110	-0.11	4.6	4.2	13.5	67.4	0.30	0.22	924	7
132	-0.11	5.1	3.8	12.7	66.6	029	0.22	1000	7
154	-0.11	5.5	3.6	12.4	65.6	0.29	0.22	991	7
Ewe Lambs: First 6-8 Weeks of Lactation, Suckling Twins (Wean by 8 Weeks)
88	-0.22	4.6	5.2	14.5	69.5	0.39	0.26	869	7
110	-0.22	5.1	4.6	13.9	68.6	0.37	0.20	980	7
132	-0.22	5.5	4.2	13.4	69.1	0.36	0.25	1091	7
154	-0.22	6.0	3.9	12.8	68.3	0.33	0.25	1166	7
Source: Sixth Revised Edition, National Research Council, 1985. [a] Values in Table 2 are calculated from the daily requirements in Table 1 divided by DM intake.

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