Table 5
Theoretical Amounts of Dry Matter Intake Required to Meet the Energy (TDN) Requirements of a 1200 lb Lactating Beef Cow Producing 20 lb Milk Per Day When Grazing Crested Wheat grass with Different Protein and Energy Concentrations
|
Date
of Sampling |
Avg.
Crude Protein, % |
Avg.
IVDMD, % |
Dry
matter intake required to meet TDN
requirements for a 1200 lb lactating cow, %BW |
|
May |
23.27 |
56.77 |
2.3 |
|
Late May |
19.77 |
50.20 |
2.9 |
|
Mid June |
18.33 |
45.30 |
3.5 |
|
Late June |
15.60 |
46.23 |
3.4 |
|
Mid July |
13.90 |
44.43 |
3.6 |
|
Mid Aug |
11.73 |
40.97 |
4.5 |
|
Sept |
9.70 |
38.00 |
5.4 |
|
Late Oct |
9.30 |
34.33 |
7.7 |