Table 7

Table 7. Twelve-month nutrient requirements for 1200-pound range cows with calf birth dates in February.
	Dry Gestation		3^rd Trimester		Early Lactation		Lactation
	Ration	Pasture	Ration	Pasture	Ration	Pasture	Ration	Spring Pasture	Summer Pasture	Fall Pasture
Days			90		32		45	31	137	30
Daily Requirements in Pounds
Dry Matter			24		27				27
Energy (TDN)			12.62		15.85				15.23
Crude Protein			1.87		2.73				2.51
Calcium			0.06		0.08				0.07
Phosphorus			0.04		0.05				0.05
Production Period Requirements in Pounds
Dry Matter			2160		864		1215	837	3699	810
Energy (TDN)			1135.80		507.20		685.35	472.13	2086.51	456.90
Crude Protein			168.30		87.36		112.95	77.81	343.87	75.30
Calcium			5.40		2.56		3.15	2.17	9.59	2.10
Phosphorus			3.60		1.60		2.25	1.55	6.85	1.50
12-Month Requirements in Pounds
			Totals for Rations		Totals for Pastures		Totals for 12 Months
Dry Matter			4239		5346		9585
Energy (TDN)			2328.35		3015.54		5343.89
Crude Protein			368.61		496.98		865.59
Calcium			11.11		13.86		24.97
Phosphorus			7.45		9.90		17.35