Pasture improvement
- What changes should be made in livestock management? The answer is "F -
switch to a management intensive rotational grazing system. By switching to MiG
forage supplies meet animal demand in all seasons.
- What type of additional forage is needed to improve this forage program?
The answer is "D - No additional forages needed - use existing pasture". Since
forage was short in summer, fall and winter any shift in forage species would
create a larger deficit in the other seasons. Management intensive grazing will
correct the situation in all seasons.
- How should this forage be planted? The answer is "D - No additional
forages needed - use existing pasture" since no additional forages are needed.
- What fertilizer rate is recommended for this forage? The answer is the
same as for Question 6 existing conditions.
- What limestone rate is recommended for this forage in tons per acre? The
answer is the same as for Question 7 in the Appraisal of Existing Conditions.
Pasture Scenario Calculations:
| Animal Liveweight |
Calf Number: |
Calf Avg. Weight: |
| 30 cows @ 1100 lbs. |
= |
33000 lbs. |
|
30 X .90 = 27 |
450 + .5 (150) = 525
|
| 1 bull @ 2000 lbs. |
= |
2000 lbs. |
|
| 27 calves @ 525 lbs. |
= |
14175 lbs. |
(Spring) |
Forage Consumption:
| Spring |
|
Fall |
| Cows (dry) |
= |
33,000 |
x |
.02 |
= |
660 |
|
Cows (lact) |
= |
33,000 |
x |
.03 |
= |
990 |
| Bull |
= |
2,000 |
x |
.02 |
= |
40 |
|
Bull (brdg) |
= |
2,000 |
x |
.025 |
= |
50 |
| Calves |
= |
14,175 |
x |
.03 |
= |
425 |
|
|
1040 |
|
| 1125 |
|
|
| |
| Summer |
|
Winter |
| Cows (dry) |
= |
33,000 |
x |
.02 |
= |
660 |
|
Cows (lact) |
= |
33,000 |
x |
.03 |
= |
990 |
| Bull |
= |
2,000 |
x |
.02 |
= |
40 |
|
Bull |
= |
2,000 |
x |
.02 |
= |
40 |
| |
700 |
|
|
1030 |
Total forage required based on % utilization (.35 cont. .65 mig)
Spring
1125/.35 = 3214 x 100 = 321,400
1125/.65 = 1731 x 100 = 173,100
Summer
700/.35 = 2000 x 100 = 200,000
700/.65 = 1077 x 100 = 107,700
Fall
1040/.35 = 2971 x 100 = 297,100
1040/.65 = 1600 x 100 = 160,000
Winter
1030 daily needs x 65 = 66,950 herd requirements for the season
65,000 standing x .35 (cont. grazing) = 22,750 + 50,000 hay = 72,750
65,000 standing x .65 (MiG) = 42,250 + 50,000 hay = 92,250
Return to Grassland Evaluation Contest Study Guide
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