The Dairy Nutrition Blackbelt Podcast Dr. Megan Abeyta: Leaky Gut in Dairy Cows | Ep. 124
Mar 5, 2026
Dr. Megan Abeyta, a dairy nutrition and management consultant who researched hindgut acidosis and leaky gut at Iowa State, explains what causes leaky gut in cows. She discusses how stressors like heat and acidosis trigger inflammation and energy drains. Practical tools covered include biomarkers and rumination data to spot problems and management strategies to reduce stacked stressors.
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What Leaky Gut Is And Common Causes
- Leaky gut is a compromised gut epithelium where tight junctions separate and endotoxin like LPS translocates into the bloodstream activating the immune system.
- Megan Abeyta lists heat stress, feed restriction, rumen acidosis and psychological stress as common on-farm triggers.
Inflammation Steals Energy From Milk
- Immune activation is energetically expensive and diverts glucose and amino acids away from milk production toward survival functions.
- Megan Abeyta compares the immune response to an army and links prolonged inflammation to transition disorders like ketosis and hypocalcemia.
LPS Challenge Linked To Hypocalcemia
- Megan Abeyta recounts giving a cow LPS and observing hypocalcemia to illustrate inflammation's effect on calcium status.
- She uses this example to connect immune activation with postpartum hypocalcemia and other transition problems.