By Scout Nelson
Cornstalk residue is an important feed source for pregnant cattle during late gestation. When managed correctly, it provides energy and protein while lowering winter feed costs.
Only about 15 percent of cornstalk residue should be used. This includes any leftover corn and about half of the husk and leaves. These parts offer the best nutrition. Cattle naturally eat the remaining corn first, then husk and leaf, and finally cob and stalk. When forced to eat stalks and cobs, their nutritional intake becomes poor.
A general guideline suggests that for every 100 bushels of corn produced, one cow can graze for one month. High yielding corn fields, producing more than 200 bushels per acre, often have lower quality residue. In these fields, grazing days should be reduced by five percent by adjusting utilization to 45 percent.
Pregnant cattle grazing cornstalks can meet their basic energy and protein needs without extra feed. However, mineral supplementation is required. Minerals should contain high levels of vitamin A, phosphorus, copper, and zinc to support health during pregnancy.
Corn residue is easily lost due to wind and trampling. Monitoring husk availability is an effective way to judge if enough feed remains. When husks become hard to find, cattle should be moved to a new field or provided with supplements.
Young pregnant heifers have higher nutritional needs than mature cattle. During mid gestation, small amounts of dried or modified distillers grains are needed daily. During late gestation, higher supplement amounts are required to maintain body condition and support calf development.
If cattle begin to lose weight, they should be supplemented immediately or moved to another grazing area. Proper management helps ensure healthy cows and strong calves.
Photo Credit: gettyimages-imaginegolf
Categories: Nebraska, Crops, Corn, Livestock, Dairy Cattle, Goats & Sheep