Mature weight
500 kg, (1102 lb)
Class	Weight, kg	Weight, lb	DMI, kg	DMI, lb	DMI% BW	DE, Mcal	CP, g	Lys, g	Ca, g	P, g	Mg, g	K, g	Na, g	S, g	Fe, mg	Zn, mg	Cu, mg	Mn, mg	I, mg	Co, mg	Se, mg	Vit A, IU	Vit D, IU	Vit E, IU
Maintenance	500	1102	8.2	18.1	1.64	16.4	656	23	20.0	14.0	7.5	25.0	8.2	12.3	328	328	82	328	0.8	0.8	0.8	15000	2460	410
Breeding Stallion	500	1102	8.5	18.7	1.71	20.5	820	29	25.0	17.8	9.4	31.0	8.5	12.8	342	342	85	342	0.9	0.9	0.9	22500	2562	683
Pregnant Mare
9 months	500	1102	8.1	17.9	1.62	18.2	801	28	34.6	26.2	8.7	29.0	8.1	12.1	405	324	81	324	0.8	0.8	0.8	30000	4854	647
10 months	500	1102	8.2	18.1	1.65	18.5	815	29	35.2	26.7	8.9	30.0	8.2	12.4	412	329	82	329	0.8	0.8	0.8	30000	4942	659
11 months	500	1102	8.2	18.1	1.64	19.7	866	30	37.4	28.3	9.4	31.0	8.2	12.3	410	328	82	328	0.8	0.8	0.8	30000	4920	656
Lactating Mares
Foaling to 3 months	500	1102	10.9	24.0	2.18	28.3	1427	50	56.0	36.1	10.9	46.0	10.9	16.3	544	435	109	435	1.1	1.1	1.1	30000	6526	870
3 months to weaning	500	1102	9.9	21.8	1.99	24.3	1049	37	36.0	22.2	8.6	33.0	9.9	14.9	496	397	99	397	1.0	1.0	1.0	30000	5956	794
Working Horses
Light work	500	1102	8.4	18.5	1.67	20.5	820	29	25.0	17.8	9.4	31.0	25.1	12.6	335	335	84	335	0.8	0.8	0.8	22500	2510	669
Moderate work	500	1102	9.3	20.5	1.86	24.6	984	34	30.0	21.4	11.3	37.0	27.8	13.9	371	371	93	371	0.9	0.9	0.9	22500	2785	743
Intense work	500	1102	11.5	25.4	2.30	32.8	1312	46	40.0	28.5	15.1	50.0	34.5	17.3	460	460	115	460	1.2	1.2	1.2	22500	3453	921
DMI = dry matter intake