Table 6. Twelve-month forage costs for mature crested wheatgrass harvested-forage management strategy.
Dry
Gestation
Third
Trimester
Early
Lactation

Lactation
Lactation
Lactation
Season
Late
Fall

Winter
Early
Spring

Spring
Summer
Early Late
Fall
Days
32
90
45
31
137
30
Herbage Wt lb/ac
Forage Wt lb/ac
1600
1600
1600
1600
1600
1600
Forage DM/AUlb/d
24
24
27
30
30
30
Production Cost$/ac
28.11
28.11
28.11
28.11
28.11
28.11
Forage DM Cost$/ton
34.80
34.80
34.80
34.80
34.80
34.80
Land Area/Moac
0.44
0.45
0.51
0.56
0.56
0.56
Land Area/PPac
0.47
1.35
0.76
0.58
2.57
0.56
Land Cost/Mo$/mo
6.26
6.40
7.25
7.96
7.96
7.96
Land Cost/PP$/pp
6.68
19.20
10.81
8.25
36.55
7.96
Forage Cost/D$/d
0.41
0.52
0.75
0.70
0.70
0.70
Forage Cost/Mo$/mo
12.30
15.60
22.50
21.00
21.00
21.00
Forage Cost/PP $/pp
13.12
46.80
33.75
21.70
95.90
21.00
Crude Protein%
6.4
6.4
6.4
6.4
6.4
6.4
Crude Proteinlb/ac
102
102
102
102
102
102
Cost CP$/lb
0.28
0.28
0.28
0.28
0.28
0.28
Cow CP/Dlb/d
1.49
1.87
2.73
2.51
2.51
2.51
Supplementation
Roughage/Dlb/d
0.6
CP/Dlb/d
0.33
1.00
0.78
0.78
0.78
Sup. Cost/PP$/pp
0.34
9.02
13.50
7.27
32.14
7.02
Total Feed Cost$/pp
13.46
55.82
47.25
28.97
128.04
28.02
Cost/D$/d
0.42
0.62
1.05
0.93
0.93
0.93