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When Should We Be Concerned About Vitamin a Supplementation?

By  Lawton Stewart

Vitamins are a unique dietary component for beef cattle and are categorized into two groups: water-soluble and fat-soluble. Bacteria in the rumen synthesize water-soluble vitamins (e.g. B12, thiamin, niacin). Therefore, supplementation is generally not needed as long as the rumen if functioning properly. This leaves the fat-soluble vitamins (A, D, E, and K). Of these, Vitamin A is considered the most important when feeding cattle.

What is Vitamin A and why is it important?
Vitamin A, also known as retinol, is a compound that is essential for growth, reproduction, maintenance of body tissue, and bone development. Technically, Vitamin A is not . 

Source : osu.edu

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In this episode of The Swine Health Blackbelt Podcast, Dr. Erin Kettelkamp from Swine Vet Center reviews common biosecurity audit findings from the Spring 2026 outbreak season across the Midwest. She explains how PRRS pressure exposed filtration leaks, transport gaps, smoke testing needs, and daily execution issues that can weaken even strong biosecurity investments. Listen now on all major platforms!

"Basic biosecurity execution can determine whether a filtration investment delivers real protection or leaves costly gaps exposed."

Meet the guest: Dr. Erin Kettelkamp is a consulting swine veterinarian with Swine Vet Center in northern Illinois. She specializes in herd health, biosecurity, and disease prevention across all phases of swine production, with applied field research focused on disease prevention and practical biosecurity solutions. Learn more from Dr. Erin Kettelkamp on The Swine Health Blackbelt Podcast, available on all major platforms.