Table 22. Range cow and calf performance on native rangeland and domesticated grass pastures during the 31 day spring portion of the lactation production period.
		Native Rangeland (12-m RS)*	Native Rangeland (6.0-m SL)	Crested Wheatgrass Unfertilized (4.5-m SL)	Crested Wheatgrass Unfertilized (4.5-m Def)	Crested Wheatgrass Fertilized (4.5-m TOR)
Length of Period	days	31	16	31	76	31
Acres/Month	ac	4.62	4.04	1.82	1.67	0.75
Acres/Period	ac	4.77	2.10	1.88	4.16	0.75
Cow ADG	lbs		0.12	1.95	0.91	2.68
Cow Gain/Acre	lbs		0.91	32.15	16.63	110.77
Cow Gain/Period	lbs		1.92	60.45	69.16	83.08
Calf ADG	lbs	1.80	1.80	1.91	1.79	2.18
Calf Gain/Acre	lbs	11.70	13.64	31.49	32.70	90.11
Calf Gain/Period	lbs	55.80	28.80	59.21	136.04	67.58

*Based on estimated calf weight