David Schingoethe Symposium Highlights
By: Dr. Emily Taylor
Dr. Paul Kononoff – University of Nebraska – Lincoln ‘Stretching Forages with Limited Quality and Quantity by Using Non-forage Fiber Sources (NFFS) Available in the Midwestern United States:’ Dr. Kononoff began discussing the challenges dairy producers face to maintain normal milk production when forage sources are scarce. Non-forage fiber sources (NFFS; corn gluten feed, brewers grains, distillers grains, etc.) may be used during these years to supply nutrients that would otherwise come from forages. However, these feeds come with their own challenges that include low effective fiber, increases in RUP, varied chemical composition, and may include toxins or antinutritional factors.
Dr. Kononoff continued by discussing recent research that utilized these NFFS feedstuffs and how they impact milk production. In addition, he reviewed the importance of sampling theses sources to identify variation within the feed, as well as variations among farms because of the potential heavy impact on production. However, in some cases, the use of NFFS may reduce variation in feed supply when using forages.
Dr. Micheal Brouk – Kansas State University ‘Managing Feed Efficiency to Improve Dairy Farm Margin:’ The topic of discussion this morning has been the many challenges dairy producers are facing. Dr. Brouk began his discussion on the margins within a dairy farm and factors affecting it; milk prices, high feed costs, and increasing production costs. Specifically, he discussed the changes in milk-feed prices over the last few years.
Commodity storage on a dairy farm has the potential to be a large source of lost income. This loss may be due to weather, insufficient use or area for storage, as well as loss feeds during loading. Dr. Brouk discussed the positive and negative aspects of different commodity shelters and how they affect the efficiency of the farm and the economic benefits that could be value-added.
Jesse Thompson – Church and Dwight ‘Pathogenic Bacterial Levels in US Silages:’ Jesse began his presentation by reviewing bacteria that are often found in preserved forage sources. He mapped recent research that was done to understand the levels and diversity of pathogens in silage systems. This was done as a prerequisite to developing an effective way to control them. Data were provided that show specific bacterial colonies and numbers associated with corn silage, haylage, and TMR samples. While these bacterial loads have been identified, he explained that further work is still needed to determine their source and new methods of controlling them, potentially through the fermentation process.
Alex Tebbe – The Ohio State University ‘Young Scholar Presentation: Protein and Amino Acid Nutrition in Fresh Cows:’ Alex began his presentation by describing the mobilization of protein and fat to meet MP and NEL requirements in fresh cows. This leaves them at the highest risk for developing a disease and/or a metabolic disorder. This is caused by the negative nutrient balance common in dairy cows when the nutrient demands outweigh the cow’s metabolizable intake. Alex provided data elucidating that the intake of metabolizable protein and its amino acid profile may influence the performance and health of fresh cows more than increasing energy intake.