On Marin Sun Farms we raise our cattle on pasture. Cattle brought up with fresh air, sunshine, and fresh pasture under them, produce the highest quality, best tasting meats. Keep up to date on the latest news with our Production Blog.
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The Environment
Our cattle graze pastures in planned rotations that provide the pasture plants and soil, the disturbance, nutrients, and rest/recovery needed to build additional soil, enhance bio-diversity, harvest solar energy, and demonstrate a more sustainable food model. From our coastal ranches with a variety of native grasses, to our inland valley ranches with planted and irrigated pastures, our livestock feed, converting stored solar energy within pasture plants into delicious and nutritious meat.
The Diet
Our cattle select their diet from the pasture plants they ingest. In addition to pasture plants, our cattle are supplemented free choice minerals, stored hay and/or other allowed stored feeds when the pasture nutrient density is to low to support adequate finishing growth.
Our Cattle
Our cattle are mostly early maturing and easy fattening breeds, like Angus and Hereford, but occasionally consist of a few other breeds. Cattle that are 100% grass fed require more time to reach market as they grow more slowly on the low energy grass diet. This slower growth allows the cattle to properly mature into exceptionally fine quality beef at 24-30 months of age. The following breeds have frequented our pastures: Black Angus – Red Angus – Hereford – Short Horn – Holstein – Devon – Charolais
Our Beef
Our beef is very robust, full flavored, tender, and delicious meat. We produce fresh beef year round.
Organic? Local? Grass Fed? Pasture Raised? Humane?
- We are not certified organic.
- We use no herbicides or pesticides on our pastures.
- We use no hormones or artificial growth stimulants.
- Our cattle are free of antibiotics.
- Our cattle are 100% grass fed, finished, and pasture raised.
- Our cattle are locally raised within the Bay Area Food-Shed.
- Supplemental feed specifics.
Supply Chain
MSF cattle are raised on farms within the Bay Area Food-Shed. Cattle are slaughtered at either Rancho USDA facility in Petaluma or at Redwood Meats USDA facility in Eureka. The carcasses are transported to the F. Uri Meat Company USDA facility in San Francisco, dry aged, and butchered by MSF staff butchers for wholesale sales. Primal cuts destine for retail sale are then transported to the MSF retail butcher shops in Point Reyes Station or Oakland, for further fabrication, cutting and packaging.
It is the connection and transparency from production to plate that is most critical in upholding the highest level of integrity. If you have any questions or would like clarification on anything, please contact us.


