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Table 7. Winter Feed Budget for a 50-cow Beef Herd Using Corn Silage as
Roughage
| |
30% DM Corn Silage |
Soybean Meal Equivalent |
| Class of Cattle |
No. Head |
No. Days |
lb. per head per day |
Herd total for Winter (T) |
Total per Cow Unit (T) |
lb. per head per day |
Herd total for winter (lb.) |
Total per Cow unit (lb.) |
| Pregnant mature cows |
40 |
120 |
45 |
108.0 |
2.16 |
--- |
--- |
--- |
| Lactating mature cows |
40 |
60 |
65 |
78.0 |
1.56 |
2.0 |
4,800 |
96.0 |
| Pregnant 2-yr. heifers |
10 |
120 |
45 |
27.0 |
.54 |
1.1 |
1,320 |
26.4 |
| Lactating 2-yr. heifers |
10 |
60 |
65 |
19.5 |
.39 |
2.0 |
1,200 |
24.0 |
| Open yearling heifers |
13 |
180 |
40 |
46.8 |
.94 |
1.0 |
2,340 |
46.8 |
| Mature herd sire |
1 |
180 |
70 |
6.3 |
.13 |
1.4 |
252 |
5.0 |
| Young herd sire |
1 |
180 |
80 |
7.2 |
.14 |
2.0 |
360 |
7.2 |
| Total |
--- |
--- |
--- |
292.8 |
5.86 |
--- |
10,272 |
205.4 |
Table 7 shows that it takes slightly over 53/4 T of corn silage and
about 200 lbs. of soybean meal equivalent per producing cow to winter a 50-cow herd for 180 days. In many
instances, NPN compounds such as urea would be a more economical source of supplemental crude protein than
soybean meal, as mentioned previously.
Table 8. Winter Feed Budget for a 50-Cow Beef Herd Using Hay and Corn
Silage
| |
|
|
|
|
|
|
|
|
| Class of Cattle |
No. Head |
No. Days |
lb. per head per day |
Herd total for winter (T) |
Total per cow unit (T) |
lb. per head per day |
Herd total for winter (T) |
Total per cow unit (T) |
| Pregnant mature cows |
40 |
120 |
5 |
12.0 |
.24 |
30 |
72.0 |
1.44 |
| Lactating mature cows |
40 |
60 |
10 |
12.0 |
.24 |
45 |
54.0 |
1.08 |
| Pregnant 2-yr. heifers |
10 |
120 |
15 |
9.0 |
.18 |
15 |
9.0 |
.18 |
| Lactating 2-yr. heifers |
10 |
60 |
10 |
3.0 |
.06 |
45 |
13.5 |
.27 |
| Open yearling heifers |
13 |
180 |
10 |
11.7 |
.23 |
20 |
23.4 |
.47 |
| Mature herd sire |
1 |
180 |
15 |
1.4 |
.03 |
40 |
3.6 |
.07 |
| Young herd sire |
1 |
180 |
10 |
.9 |
.02 |
60 |
5.4 |
.11 |
| Total |
--- |
--- |
--- |
50.0 |
1.00 |
--- |
108.9 |
3.62 |
As shown in Table 8, about 1 T. of hay and 3.6 T. of corn silage per
producing cow are required to winter a 50-cow herd for 180 days. With hay at 90% DM and corn silage at 30%
DM, approximately half of the total dry matter is supplied by each of these feeds.
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| 