Week 7
Dairy: Lactating Cows |
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Stages of Lactation
Text
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Phase Feeding
- 1st 35 days dry -- Far-Off
- Last 21 days dry -- Close-Up
- 0 to 14 -- Fresh
- 14 to 80 -- Peak Milk
- 80 to 200 -- Peak Intake
- 200 to 330 -- Tail End
Nutrient Concentrations
Dry Cow Nutrient Concentrations
|
Far-off |
Close-up |
NEL, Mcal/lb |
0.60 - 0.64 |
0.68 -0.74 |
CP, % |
12 - 13 |
13 - 14 |
ADF |
32 - 40 |
19 - 25 |
NDF |
45 - 60 |
27 - 35 |
Milk Production Curve
Fresh Cows
- Step Nutrient Intake
- Optimize Dry Matter Intake
- Observe the Cow
- Majority of metabolic disorders
Early Lactation - First 100 days
- Goal
- High peak dry matter intake, peak milk yield, healthy
- Each lb. of peak yield = 250 - 300 lb. of lactation yield
- Negative nutrient balance - first ? days of lactation
- Most difficult time to manage cows
Mid- Late Lactation
- Take advantage of forages
- Lower cost
- Nutrient requirements not as high
- Gain weight (body condition) lost during early lactation
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