The Moos Room™

Spring may be slow to arrive in Minnesota, but research season is heating up. In this episode of The Moos Room, Brad revisits a large Minnesota-based study exploring the true cost of health events in dairy cows—and why tracking cost, not just disease incidence, could transform genetic selection and farm profitability.
Using data from thousands of Holstein cows across multiple herds, the team found that health costs are heavily concentrated in the first 30 days of lactation, when cows face metabolic stress from calving and high milk production. However, issues like lameness and mastitis continue to accumulate costs throughout the lactation, especially in older cows. In fact, total health costs more than double from first to later lactations, reflecting wear, immune fatigue, and management differences.
A key takeaway: management determines cost, but genetics influence risk. While some high-cost conditions (like reproductive disorders) are difficult to improve genetically, others—such as mastitis and metabolic disease—show stronger heritability.
The breakthrough insight is that total health cost itself is moderately heritable (~0.25)—much higher than traditional “sick vs. not sick” measures. This means selecting animals based on overall health cost could drive faster genetic progress than current methods.
Brad also highlights important genetic and phenotypic relationships:
 Higher milk production is linked to increased health costs 
 Lower somatic cell count strongly reduces total health costs 
 Taller, more angular cows tend to have higher health costs 
 Shallower udders are associated with better health outcomes 
From a practical standpoint, the episode emphasizes:
 The need for consistent, detailed health and cost recording
 Moving beyond binary disease tracking to full economic impact
 Incorporating total health cost into sire selection decisions
Bottom line: Selecting for lower total health cost can improve profitability, extend cow longevity, and enhance animal welfare—potentially saving tens of thousands of dollars at the herd level in just one generation.
Questions, comments, scathing rebuttals? -> [email protected] or call 612-624-3610 and leave us a message!
Linkedin -> The Moos Room
Twitter -> @UMNmoosroom and @UMNFarmSafety
Facebook -> @UMNDairy
YouTube -> UMN Beef and Dairy and UMN Farm Safety and Health
Instagram -> @UMNWCROCDairy
Extension Website
AgriAmerica Podcast Directory

This episode of The Moos Room dives into new research on agrivoltaics—specifically how forages perform when grown under solar panels in grazing systems. Brad shares results from a recent study evaluating multiple grass and legume species across different solar array designs compared to a traditional pasture.
Overall, forage production depended heavily on species and shade level. Cool-season grasses like meadow fescue and orchardgrass performed well under solar panels, sometimes even producing more biomass than in open pasture. In contrast, warm-season species like sorghum-sudangrass struggled under shaded conditions. Legumes such as red clover maintained strong performance and contributed to improved forage quality.
One of the biggest takeaways was that while heavier shade can reduce total biomass, it often improves forage quality. Grasses grown under solar panels showed higher crude protein and greater fiber digestibility, especially in more shaded systems. This suggests agrivoltaic systems can still produce high-quality feed, even when yield is slightly reduced.
The episode highlights that selecting the right species—particularly shade-tolerant cool-season grasses and legume mixtures—is key to success in grazing-based solar systems. Ultimately, agrivoltaics offers a promising opportunity to combine livestock production with renewable energy, providing both high-quality forage and an additional revenue stream for farmers.

Agrivoltaic arrays and effects of forage biomass and nutritive value of grasses and legumes for grazing dairy cattle
https://www.jdscommun.org/article/S2666-9102(26)00073-6/fulltext
Agrivoltaics Webinar Cattle and Kilowatts 4/14
Sponsored by University of Minnesota Extension
Our first webinar is April 14th, 2026 5pm CT.
Register for the zoom link: z.umn.edu/cattlekilowatts

Cattle and kilowatts webinar: Real-world solar grazing in practice
Join the University of Minnesota Extension for an in-depth webinar featuring pioneers of cattle solar grazing. This session moves beyond theory and into the pasture, focusing on the practical management, infrastructure, and animal welfare considerations of running cattle on solar sites. Guest speakers include Will Harris and Dale Caldwell (White Oak Pastures) leaders in regenerative agriculture who have integrated solar grazing into their multi-species operation in Bluffton, Georgia. Josh Bennett (HUWA Enterprises), an agrimation expert at the forefront of cattle-ready solar design will also join the discussion.

Questions, comments, scathing rebuttals? -> [email protected] or call 612-624-3610 and leave us a message!
Linkedin -> The Moos Room
Twitter -> @UMNmoosroom and @UMNFarmSafety
Facebook -> @UMNDairy
YouTube -> UMN Beef and Dairy and UMN Farm Safety and Health
Instagram -> @UMNWCROCDairy
Extension Website
AgriAmerica Podcast Directory

In this episode of The Moos Room, Brad shares insights from a recent study at the University of Minnesota Morris dairy focused on reducing mastitis and improving behavior in first-lactation heifers. The research tested a simple, low-labor strategy: bringing heifers into the parlor once per week for three weeks before calving, gently acclimating them, and applying a 1% iodine teat dip. Results showed that trained heifers were calmer, easier to milk, and significantly less likely to kick during milking, improving both animal welfare and milker safety. While overall clinical mastitis rates did not differ, the treatment notably reduced Staphylococcus aureus infections, with untrained heifers having five times greater odds of infection shortly after calving. The episode highlights how small, proactive management steps before calving can break the cycle of stress, poor behavior, and disease—offering a practical approach to improving transition success in dairy heifers.
Questions, comments, scathing rebuttals? -> [email protected] or call 612-624-3610 and leave us a message!
Linkedin -> The Moos Room
Twitter -> @UMNmoosroom and @UMNFarmSafety
Facebook -> @UMNDairy
YouTube -> UMN Beef and Dairy and UMN Farm Safety and Health
Instagram -> @UMNWCROCDairy
Extension Website
AgriAmerica Podcast Directory

Spring calving is underway in Minnesota, and with it comes renewed focus on the booming beef-on-dairy market. In this episode, Brad dives into current calf prices—highlighting the strong premium for beef-cross calves—and breaks down new research comparing Holstein and beef × dairy calves under the same management.
Across studies from Canada and Brazil, crossbred calves consistently showed advantages: lower rates of diarrhea, fewer treatment interventions, improved starter intake, and greater feed efficiency. While respiratory disease incidence was similar, crossbreds recovered faster and required fewer treatments. By 84 days, crossbred calves were heavier and more efficient to raise, reinforcing long-standing evidence that heterosis improves calf performance. The takeaway is clear: beef-on-dairy calves not only bring strong market value but also demonstrate biological and economic advantages during the pre-weaning phase—making them an increasingly attractive strategy for dairy producers navigating volatile milk markets.
 
Questions, comments, scathing rebuttals? -> [email protected] or call 612-624-3610 and leave us a message!
Linkedin -> The Moos Room
Twitter -> @UMNmoosroom and @UMNFarmSafety
Facebook -> @UMNDairy
YouTube -> UMN Beef and Dairy and UMN Farm Safety and Health
Instagram -> @UMNWCROCDairy
Extension Website
AgriAmerica Podcast Directory

On this spring episode of The Moos Room, Brad dives into the seasonal return of flies and shares results from a recent horn fly vaccine study conducted at the University of Minnesota’s WCROC. Horn flies—common in pasture-based systems—cause significant irritation, blood loss, and production losses in cattle, and their rapid life cycle makes them difficult to control, especially with increasing insecticide resistance.
The study evaluated a Medgene horn fly vaccine designed to disrupt the fly’s ability to take a blood meal, ultimately reducing reproduction. Researchers vaccinated about half of the cows and heifers across organic (pasture-based) and conventional (dry lot) systems and tracked fly populations throughout the summer. While no differences were observed for face flies or stable flies—as expected—the vaccine showed promising results for horn flies. There was little effect in conventional cows, but in pasture-based animals, especially heifers, vaccinated groups experienced a consistent 30–40% reduction in horn fly numbers compared to controls.

Overall, the findings suggest that horn fly vaccination could be a valuable new tool—particularly for grazing and organic dairy systems—to help manage fly pressure and improve animal well-being over time.
Questions, comments, scathing rebuttals? -> [email protected] or call 612-624-3610 and leave us a message!
Linkedin -> The Moos Room
Twitter -> @UMNmoosroom and @UMNFarmSafety
Facebook -> @UMNDairy
YouTube -> UMN Beef and Dairy and UMN Farm Safety and Health
Instagram -> @UMNWCROCDairy
Extension Website
AgriAmerica Podcast Directory