Show Notes
In this episode of The Dairy Nutrition Blackbelt Podcast, Gaelan Combs, a PhD student at Iowa State University, discusses the impact of dexamethasone pre-treatment on metabolism and productivity during a systemic immune challenge. He examines how inflammation affects productivity and why immune activation involves more than just inflammatory markers. Listen now on all major platforms!
"Inflammation is one of the key responses that happens when the immune system is activated, but it’s not the only factor involved."
Meet the guest: Gaelan Combs https://www.linkedin.com/in/gaelancombs-99/ is a PhD student in Animal Nutrition at Iowa State University, where his research focuses on immune activation and its metabolic effects in dairy cattle. He earned his Bachelor's degree in Dairy Science from the University of Wisconsin–Madison, where he conducted undergraduate research in dairy nutrition.
Liked this one? Don’t stop now — Here’s what we think you’ll love! https://www.wisenetix.com/blog?tag=the+dairy+nutrition+blackbelt
What will you learn: (00:00) Highlight (00:53) Introduction (03:00) Immune activation effects (03:35) Inflammation and productivity (04:20) Dexamethasone's role explained (05:48) LPS challenge model (10:48) Inflammation vs immune activation (12:58) Closing thoughts
The Dairy Nutrition Blackbelt Podcast is trusted and supported by the innovative companies:
* Adisseo (https://www.adisseo.com/en/) * Priority IAC (https://priorityiac.com/) * Fortiva (https://www.fortivaimpact.com/)
- Virtus Nutrition (https://virtusnutrition.com/essentialstrata/) - Kemin (https://www.kemin.com/dairy) - Zinpro (https://www.zinpro.com/isoferm/)
𝗟𝗶𝘀𝘁𝗲𝗻 𝗼𝗻 𝗔𝗽𝗽𝗹𝗲 𝗣𝗼𝗱𝗰𝗮𝘀𝘁𝘀, 𝗦𝗽𝗼𝘁𝗶𝗳𝘆 𝗼𝗿 𝗮𝗻𝘆 𝗺𝗮𝗷𝗼𝗿 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺. Website: https://www.wisenetix.com/dairynutritionblackbelt Instagram: https://www.instagram.com/dairycampus/ LinkedIn: https://www.linkedin.com/showcase/dairycampus/
More from The Dairy Nutrition Blackbelt Podcast
In this episode of The Dairy Nutrition Blackbelt Podcast, Bennet Crochet, owner of BC Dairy Consulting, discusses practical transition cow nutrition and management. Drawing on 28 years of consulting experience, he covers calcium status, anionic diets, urine pH monitoring, targeted feed additives, and metabolic markers while emphasizing cow comfort and farm-specific decisions. Learn how practical nutrition and thoughtful monitoring can support transition success. Listen now on all major platforms!
Every productive dairy starts with the decisions farmers make each day. As we celebrate National Farmers Day this month, The Dairy Nutrition Blackbelt Podcast welcomes Dr. Jorge Barrientos Blanco, Dairy Nutritionist at Progressive Dairy Solutions, to explain how feeding accuracy, forage sampling, mixer performance, feed delivery, and cow grouping help match nutrient supply with cow requirements. Celebrate the work behind efficient, sustainable, and profitable dairy production. Listen now on all major platforms!
In this episode of The Dairy Nutrition Blackbelt Podcast, Dr. Andres Contreras, Professor at Michigan State University, explains how adipose tissue supports dairy cows during negative energy balance. He discusses omega-3 fatty acids, inflammation, insulin sensitivity, fatty acid mobilization, and the differences among fish, algae, and canola sources. Learn why selecting the right fatty acid source can help transition cows manage circulating fatty acids more efficiently. Listen now on all major platforms!
In this episode of The Dairy Nutrition Blackbelt Podcast, Dr. Alexander Hristov, Distinguished Professor of Dairy Nutrition at Penn State, discusses rumen methane formation and practical mitigation strategies for dairy cattle. He explains how fiber, starch, diet formulation, and feed additives influence hydrogen flow in the rumen, why production trade-offs matter, and why producers should evaluate methane-reduction claims through independent science. Listen now on all major platforms!
In this special roundtable episode of The Dairy Nutrition Black Belt Podcast, Dr. Victoria Asselstine, Ruminant Technical Team Manager at Jefo Nutrition, and Dr. Lance Baumgard, Distinguished Professor at Iowa State University, discuss transition cow health and challenge long-held assumptions about its management. They explore B vitamins, inflammation, ketones, subclinical hypocalcemia, feed intake, and stress management. Discover why the same metabolic marker can reflect either high production or hidden illness. Listen now on all major platforms!