Uncontrolled Inflammation: How Nutritional Management Can Help

**Controlled vs. uncontrolled inflammation.** After introductions, Dr. Rico explains that inflammation is a natural, protective immune response that cows need for processes such as calving. However, it has to stay limited in extent and duration, and it has to resolve properly. Otherwise, it can become uncontrolled inflammation that works against the cow. (00:00 – 07:26) **Are high-producing cows getting what their immune systems need?** Next, Dr. Rico asks whether cows get the nutrients needed for a competent immune response as production rises. Building on this, Dr. Fox links chronic inflammation to respiratory disease, liver abscesses, mastitis, lameness and other conditions. He stresses prevention because treatment options can become very limited once disease is chronic. (07:27 – 13:04) **Key nutrients involved in inflammation.** From there, Dr. Rico describes how omega-6 and omega-3 fatty acids help start and resolve inflammatory responses. He also explains that niacin (vitamin B3) supports the systems that defend against reactive oxygen species. In addition, he covers minerals and vitamin D3. He suggests that requirements built for maximum productivity may not fully cover immune protection during a challenge. (13:05 – 18:09) **The high-performance athlete analogy.** Similarly, Dr. Rico compares high-producing cows to elite athletes: high output doesn't have to mean sickness when the right building blocks are supplied. He points to studies presented at the conference that saw improved immune responses when certain nutrients were supplied at three to four times the recommendation. In those studies, cows under challenge had less dramatic rectal temperatures and toned-down inflammatory markers. Importantly, he frames this as a question about supplementation during stress, not proof that cows are generally underfed. (18:10 – 21:02) **The open question of timing.** Even so, timing is still uncertain. Research doesn't yet define exactly when supplementation should start ahead of heat stress. B-complex vitamins are metabolized quickly, for example, while vitamin D3 builds up differently in the body. As for omega-3s, cows don't yet have an established requirement. On top of that, rumen biohydrogenation and the very low conversion of alpha-linolenic acid to DHA and EPA create further bottlenecks. (21:03 – 24:48) **Management first: vaccination, cow comfort and stress.** The conversation then turns to management. Dr. Fox advises against vaccinating during stress or when nutrition is inadequate. He also describes changing vaccine timing based partly on cowside sensor data. Together, he and Dr. Rico stress getting the basics right before fine-tuning supplementation: feed intake, lying time, bunk space, stocking density, feeding management and social stress. (24:49 – 30:30) **Transition cows and overconditioning.** Around transition, Dr. Fox prefers to minimize disruption for about three weeks before and three weeks after calving. During that window, he prioritizes lying time, rumination, feed access and intake. The panel also looks at overconditioning and chronic low-grade inflammation. Dr. Fox argues that prevention has to start in late lactation, because overweight cows may already eat less before calving and regain their appetite more slowly afterward. (30:31 – 38:20) **Putting prevention into practice.** Still, prevention can be hard to carry out with one-group TMR systems. Dr. Fox talks about separating first-lactation animals and adjusting diets for mature cows that are gaining too much weight. He notes, however, that everyday realities like pens, gates and people can undermine precise grouping. As a result, the speakers come back to forage quality, consistent husbandry and doing the basics well. (38:21 – 44:37) **Emerging strategies and final takeaways.** Finally, the panel considers botanicals, polyphenols and other nutraceutical approaches for supporting immune response. Dr. Fox proposes a nutritional "pre-adjuvant" before planned vaccinations. Meanwhile, Dr. Rico notes that more research is needed, since nutrient requirements have traditionally focused on production rather than on preparing cows for stress. The closing takeaways center on management, cowside monitoring, earlier detection of uncontrolled inflammation in dairy cows and continued research into nutritional support for immune function. (44:38 – End) If you enjoyed this episode, subscribe and share it with your industry colleagues so they can join us at the Real Science Exchange virtual pub table. Don't forget to register for our upcoming Real Science Lecture Series webinars. Want a Real Science Exchange t-shirt? Screenshot your rating, review or subscription and email it to anh.marketing@balchem.com along with your size and mailing address, and we'll mail you a shirt. ## Frequently Asked Questions **What is uncontrolled inflammation in dairy cows?** Inflammation is a normal, protective immune response, and cows need it for events like calving. It becomes uncontrolled when it isn't contained in extent or duration, or when it doesn't resolve properly. When that happens, it can contribute to health and performance challenges. **How can nutritional management support the immune response?** The panel discusses nutrients such as omega-3 and omega-6 fatty acids, niacin (vitamin B3), minerals and vitamin D3. These nutrients play roles in starting and resolving inflammation and in antioxidant defense. Research is still exploring whether supplying more of them during stress can help. **Why does the transition period matter for inflammation?** The weeks around calving bring major physiological change. Because of this, the speakers prioritize feed intake, lying time, rumination and limiting disruption. They also point to body condition management in late lactation as a key prevention step. **Does vaccination timing affect immune response?** According to Dr. Fox, vaccinating during stress or when nutrition is inadequate may be less effective. He describes using cowside sensor data to help guide vaccine timing. **What is the most important takeaway from this episode?** Get the basics right first: management, cow comfort, forage quality and monitoring. From there, research continues to look at how targeted nutrition can support immune function during stress.