Table 3.

Nutrient composition of ingredients used in treatment diets of consisting of forage pea (Pisum sativum L.; c.v. CDC Horizon) harvested for hay at EARLY, MID, and LATE maturities, mineral supplement, and pellet supplement for beef cattle

Nutrient composition1, % DM	EARLY pea2	MID pea	LATE pea	Mineral3	Pellet4
DM	87.28 ± 0.72	87.88 ± 1.97	87.14 ± 1.07	91.98 ± 1.29	88.11 ± 0.78
OM	94.11 ± 2.80	94.57 ± 2.68	95.12 ± 2.32	94.07 ± 4.65	96.78 ± 2.11
CP	16.30 ± 1.39	13.37 ± 5.20	13.50 ± 0.46	27.75 ± 0.81	9.80 ± 0.80
aNDFOM	49.97 ± 1.46	50.40 ± 2.49	39.20 ± 1.87	11.53 ± 0.70	46.13 ± 2.05
ADF	42.50 ± 0.20	42.37 ± 2.12	32.23 ± 2.71	5.77 ± 0.25	26.73 ± 1.38
ESC	3.90 ± 0.35	3.47 ± 0.75	4.03 ± 0.76	3.53 ± 2.19	3.73 ± 2.19
Starch	2.00 ± 1.23	6.87 ± 5.59	15.12 ± 12.59	27.64 ± 23.14	17.92 ± 14.96
Ether extract	1.11 ± 0.70	1.07 ± 0.64	1.02 ± 0.54	5.29 ± 4.00	1.22 ± 0.71
Ca	0.83 ± 0.52	0.93 ± 0.64	0.67 ± 0.43	1.63 ± 1.21	0.19 ± 0.02
P	0.18 ± 0.14	0.12 ± 0.08	0.17 ± 0.12	0.89 ± 0.43	0.19 ± 0.06

¹Values stated as mean ± SD based on the chemical analysis of feed ingredients from each period of the 3 × 3 Latin square design.²Harvest maturities consisted of EARLY (plants with flat pods at one or more nodes), MID (filled pods at one or more nodes and leaves that were turning from green to gold), and LATE (yellow dry seeds filled pods on most nodes, and the leaves and pods were yellow).³Mineral was composed of ground wheat (69.3%), porcine tallow (9.3%), molasses (8.3%), and urea (5.0%). The supplement provided 2.1% Ca, 1.1% P, 0.2% Mg, 0.6% K, 0.4% Na, 0.8% Cl, 0.2% S, 86.2 ppm Mn, 182.2 ppm Cu, 555.5 ppm Fe, 282.7 ppm Zn, 2.9 ppm I, 0.6 ppm Co, 0.6 ppm Se, 14,543.6 IU/kg Vitamin A, 1,872.5 IU/kg Vitamin D3, 424.4 IU/kg Vitamin E, 0.10% monensin, and 0.11% melengestrol acetate (MGA; Federated Co-operatives Limited; Saskatoon, SK, Canada).

⁴Pellet was composed of oat hulls (50%), wheat middlings (40%), and molasses (10%).