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A Natural Solution for California's Herds: African Catfish Peptides

California's cattle producers and agricultural communities are all too familiar with the rising challenge of antibiotic resistance, making common bacterial infections harder to treat in livestock. But imagine a future where we could tackle these infections with a natural, powerful alternative. Our research points to just that: antimicrobial peptides (AMPs) found in African catfish.

We're really excited about these peptides because African catfish thrive in pathogen-rich freshwater, naturally producing these robust immune compounds in their skin mucus as a defense. This natural origin makes them highly appealing alternatives to synthetic drugs.

Predicted Safety and Potent Action

One of the most compelling aspects of these AMPs is their predicted safety for mammals. Our initial computer analyses suggest that various catfish AMPs are generally recognized as safe (GRAS). We predict they'll be absorbed in the human intestine without causing liver, brain, or heart toxicity. Furthermore, lab tests on a promising peptide, NACAP-II, confirmed it was non-hemolytic, meaning it didn't damage rabbit red blood cells—a strong indicator of its potential safety for mammalian cells.

Beyond safety, these peptides demonstrate effectiveness against problematic bacteria. One study revealed NACAP-II's strong activity against Extended-Spectrum Beta-Lactamase (ESBL)-producing Escherichia coli—a critical concern for both animal and human health due to its resistance to many common antibiotics. Another peptide, ACAP-IV, also showed antibacterial activity against E. coli and Staphylococcus aureus. We believe these AMPs work by directly disrupting bacterial cell membranes, a mechanism that makes it harder for bacteria to develop resistance compared to how they resist traditional antibiotics.

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Nate Ray - De Jager Farms

Nate Ray is the general manager of DeJager Farms Inc., responsible for producing forage feed for 8 different diaries with a total of 25,000 cows on 17,000 acres of land near Chowchilla.

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Frank Muller - Muller Ranch

The Muller Ranch (M Three Ranches), grows organic and conventionally managed tomatoes, peppers, cucumbers, sunflower, walnuts, almonds vine grapes, olives, alfalfa, squashes, millet, wheat, corn, safflower, canola, and garlic on several thousand acres in Yolo County, where Joe Muller & Sons, as the...

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Paicines Ranch Vineyard

Paicines Ranch, located south of Hollister, has been operated since the mid-19th century and was purchased by Sallie Calhoun and Matt Christiano in 2001. It consists of 7,600 acres in total, which is divided between 570 acres of farmland and the rest grazing land.

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Nitrous Oxide and California Agriculture

Frequently Asked Questions Management Practices that influence N2O emissions Fertilizer Rates Fertilizer Placement Fertilizer Type Fertilizer Timing Irrigation Systems Nitrification and Urease Inhibitors Cover Crops Sources Videos Helpful Links Nitrous Oxide Database Entries N2O emissions by crop in...

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John Teixeira - Lone Willow Ranch

John Teixeira farms 90 acres of land bordering the San Joaquin River in Firebaugh, California. The land has been certified organic since 1991. One field also carries biodynamic certification, which will soon extend to the entire farm.

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Meet Crop Nutrient Requirements

Nutrient management is critical in increasing or maintaining crop yields on a single parcel of agricultural land. To meet crop needs throughout a growing season soil fertility must be consistently high, which can be attributed to the presence and availability of nutrients.

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Resources

A collection of external online resources on: general management testing nutrient budgeting irrigation management fertilizer mangement cover crops soil organic matter agriculture, nutrient management and climate change View our videos from the 2015 Russell Ranch Field Day: Nitrogen through soil, spa...

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Reduce Nitrous Oxide Emissions

Nitrous oxide (N2O) is a greenhouse gas hundreds of times more powerful than carbon dioxide. Agricultural operations account for 60% of N2O emissions in California. For more in-depth coverage about N2O emissions, check out our N2O emissions focus topic page.

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Compost

What is Compost? What are the Benefits of Compost in Agriculture? Environmental Concerns of Compost Application References Compost is defined as the product resulting from the controlled biological decomposition of organic material1.

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Fertilizer Nitrogen

The 4Rs of nutrient management. From NutrientStewardship.com. When considering nitrogen fertilizer applications, it is important to consider the Four Rs of Nutrient Management: Right product/source, Right rate, Right time, Right place.