Division of Extension
Kent Weigel, Professor and Chair of the Department of Animal and Dairy Sciences at the University of Wisconsin – Madison Division of Extension, presents on current research on the day-to-day consistency of dry matter intake, milk yield, and the genetics behind it.
Forage testing has the potential to allow you to more effectively utilize your forages. Using test results can help you realize more pounds of milk from your cows by helping you decide where to best use your forages and how to complement them in your ration. Using forage testing is a relatively inexpensive way to maximize your efficient use of forage.
The contribution of the dairy production system to changing climate patterns is small compared to electricity generation or transportation. The U.S. EPA’s 2022 report showed that the contribution of the agriculture sector to the total greenhouse gas (GHG) emissions in the U.S was around 10% on a million metric tons of carbon dioxide equivalent (MMtCO2e) basis in 2020 (Figure 1), and about 39.5% of this 10% is represented by livestock methane emissions from the enteric fermentation and manure management.
Nutrition affects more than just the cow’s digestive system. The effects of an imbalanced diet can be seen throughout the animal’s body. Of particular interest are concentrates, such as grain-based feed ingredients, that typically contain high amounts of sugar and starch.
During the summer of 2023 Northwest Wisconsin experienced several hail events. Large hail and 60 mph straight line winds came through the Rice Lake area of Barron County on July 20, 2023. On July 24, a hail event also caused damage in central St. Croix County.
Earlier in the year, I attended the Four-State Dairy Nutrition and Management Conference, where many of the topics focused on transition cow care. One of the big take-home points from more than one speaker was that prevention of clinical disease is vital for long-term success of your cows. Issues during the transition period are associated with reduced reproduction and milk production. Prevention is followed closely by early diagnosis of clinical disease issues.
Today many forage tests provide information beyond the energy and protein in the feed but also feed fermentation quality and its stability in the manger. Having efficient fermentation is critical to ensure the forages being fed are highly palatable and digestible.
Corn silage is a key forage fed to lactating dairy cows in Wisconsin. Upgrading the nutritional value of corn silage could maximize the consumption of dry matter or increase the energy density of the diet.
Something that is constantly on the mind of dairy producers, no matter how small or large the farm, is the cost of production. Feed is the largest input cost on the dairy, making efficiency with feed bunk management a priority for all dairy farm managers.
Starch digestibility varies greatly within and among feedstuffs and thus, evaluating starch digestibility is essential for satisfactory diet formulation, nutritional management, and income over feed costs. Commercial laboratories that offer feed analysis have multiple options to measure starch digestibility of feeds and forages, and fecal starch is one of these options.
Feeding to maximize milk components has been an indispensable practice to optimize dairy profitability and homegrown forages are vital for this process. High-quality corn silage supplies energy for both the maintenance and lactation of high-producing cows.
Why is it that dairy farms in my area are averaging under the Wisconsin average of 24,884 pounds of milk per cow? This question got me asking questions to some farmers and agri-service providers. One piece of the puzzle that emerged is that we may need to be paying closer attention to transition cows in our smaller herds. Care of the transition cow is not a new concept, but management strategies for the smaller farm may be overlooked when recommendations are shared.
