Week 7
Dairy: Heifers |
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Grouping, Feeding Management, and Rations
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Groups and Feeding
- Number of groups depends on herd size and facilities
- Group 1 Postweaning
- Groups 2 and 3 - grower and hay
- Corn/grass silage or hay, concentrate based on needs
- Pre - breeding groups
- Group 4 - Breeding age groups
- Group 5 - Bred Heifers
- Body condition and supplement
- Poorest quality forage
- More groups = better nutrition but more labor
Forages for Heifers
- Allocate quality where it will be used the best
- Highest quality for younger heifers
- Older heifers receive poorest quality
- Lowest nutritional priority
- Formulate rations for heifers to adequately supplement forages used
Complete Rations for Heifers
- Advantages of TMR’s for heifers
- Minimize feed competition
- Use by-product feeds
- Feed waste
- Concerns
- Need mix wagon
- Heifer groups large enough to justify use of mix wagon
Growth Charts
- Need to routinely monitor growth
- Need facilities to do this
- Gains 1.0 - 2.0 lb/day (0 – 3 lb/day)
- Most variation between growth rates attributed to environment rather
than feeding program
- Must adjust feeding according to growth

Examples

Texas - 500 lb heifer gaining 1.8 lb/day
Components
of the Diet |
Feed |
lb (as-fed) |
Cotton gin trash |
1.6 |
Rolled corn |
2.8 |
Distillers |
1.0 |
Cotton sweepings
|
0.8 |
Alfalfa hay |
2.2 |
Wheat midds |
3.6 |
Cottonseed meal
|
0.8 |
Sorghum silage
|
2.8 |
Milk |
4.0 |
Resultant Nutritional Value and Cost
13.8 lb. DMI |
17.0% CP |
1.67 Mcal/kg
NEM |
1.06 Mcal/kg
NEG |
36% NDF |
$0.63/day |




Colorado - 500 lb heifer gaining 1.5 lb/day
Components
of the Diet |
Feed
|
lb (as-fed) |
Wheat straw |
3.2 |
Wet brewers |
6.4 |
Carrots |
4.0 |
Beet pulp |
4.0 |
Corn screenings
|
2.4 |
Alfalfa silage
|
8.0 |
Resultant Nutritional Value and Cost
13.2 lb. DMI |
11.2% CP |
1.40 Mcal/kg NEM |
0.82 Mcal/kg NEG |
46% NDF |
$0.44/day |

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