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How is dry matter of grass calculated?
(Remember to subtract the weight of the empty bag) Grass DM% = 16% (0.16) 0.200 kg x 0.16 x 40,000 (there are 40,000 quadrats in a hectare) = 1,280 kg DM/ha. DM will be higher if there is more dead (yellow) material at the base of the sward. DM will be lower if the sward is green and leafy.
How do you calculate dry matter weight?
Calculating Dry Matter
- Weigh the empty container selected to hold the feed and record the weight.
- Place the feed in the container.
- Weigh and record the container and feed weight.
- Subtract the weight of the container from the total weight (Step 3) to determine the weight of the feed before drying.
How much dry matter does a cow need per day?
Cows will voluntarily consume 2 percent of body weight or 24 pounds per day. The 24 pounds is based on 100 percent dry matter. Grass hays will often be 7 percent to 10 percent moisture.
How much dry matter does a beef cow eat per day?
Daily intake on a dry matter basis may be 1.6% to 1.8% of her body weight. In comparison, corn silage will typically be about 70% TDN and lactating beef cows can easily consume 2.5% to 2.7% of their body weight on a dry matter basis of this feed.
How much dry matter do cattle eat?
An efficient milking cow needs a daily dry matter intake equivalent to at least 3% of its body weight. Example: a 600 kg cow needs 600 kg × 3% = 18 kg DM/day. Higher producing cows will eat more than 4% of their body weight as dry matter.