Organic Dairy Feeding Trial

Dr. Sushil Paudyal is Assistant Professor of Dairy Science at Texas A&M and an outstanding dairy researcher.  Dr. Paudyal has a great interest in both nutrition and health issues in dairy cows, but he also likes to study these kinds of interactions in organic dairy cows. Sushil and I have been teaming up over the past couple of years on a few projects and we are starting one this fall (October 2024) that is very interesting. 

In partnership with Kent Nutrition Group, we’re conducting a feeding trial involving a Humic Acid Substance, specifically Menefeed MFG 150, with pens of lactating organic dairy cows. We’ll compare a group that receives Menefeed MFG 150 to a non-fed group and then switch the groups for another phase of the study. This “crossover” design will help us better understand how the supplement impacts these animals.

Our focus will be on three main areas:

1. Milk Yield and Composition: We’ll monitor how Menefeed MFG 150 affects both the quantity of milk produced and its quality, including components like fat and protein content.
2. Health Status: By analyzing blood serum tests, we aim to understand how this humic acid substance might influence cow health—looking at factors like immune function and overall vitality.
3. Rumination and Milk Conductivity: Using sensors, we plan to track rumination time and milk conductivity, which can give insights into digestive efficiency and udder health.

Menefeed MFG 150 is OMRI-listed, meaning it meets the requirements for use in organic systems, which is crucial for our organic dairy trial. The humic substances used in Menefeed MFG 150 are derived from Freshwater Reed-Sedge Peat, a mined product that undergoes mechanical processing to become suitable for animal feeding.

What are humic substances?

Humic substances are organic compounds that come from the decomposition of plant and microbial materials. You may already be familiar with humic and fulvic acids from their use in improving soil health or as foliar plant sprays (link to humic and fulvic acid info for crops). These substances have been shown to have many beneficial properties, although their exact mechanisms can sometimes be mysterious. Research has shown mixed results—sometimes they provide a clear benefit, and other times they don’t—but the potential benefits keep us intrigued.

In dairy cows, recent studies suggest that humic substances like Menefeed MFG 150 may improve rumen fermentation, enhance nutrient utilization, and even support the immune system. If these effects prove true, and if we see an increase in milk production, this trial could lead to a win-win situation for organic dairy farmers, helping them achieve greater production while maintaining cow health.