This is Part Two of our visit to Organic Pastures Dairy—the largest raw, organic dairy farm in the world.
At Organic Pastures, the cows are grass-fed year-round on a rotational grazing program. This means that when the grass on one pasture is getting low, the cows are moved to a fresh one. “Clean and green,” says Mark, “clean and green.”
Except for a renegade or two, the cows respect the solar-powered electric fence tape that acts as a gentle barrier around the current pasture. This movable tape allows for complete flexibility, and there’s no need for permanent steel fences that could injure the cows.
When the cows move to a new pasture, the milking barn follows. That’s right—it’s a mobile milking barn. This means that the cows do not need to make the twice-daily trek across the farm for milking, and there’s never a manure-filled pen or waste lagoon near the barn to contaminate ground water.
Instead, Mark designed the unique 65-foot-long, 13-foot-wide, 60,000-pound milking barn to be moved by tractor when the cows move to a new pasture. There are 30 landing places on the farm that are outfitted with electricity and water for the barn.
It’s approved by the FDA and rated grade A—clean, compact and efficient, with a propane-fuelled instant water heater for sanitizing the pipes and equipment to milk 20 cows at a time. With almost 400 cows, each milking takes several hours.
The cows line up at the barn, ready to be milked. Their teats are dipped in an iodine solution and carefully wiped with a clean cloth before the milking machine is attached. Mark prefers not to wash the cows down with water, as the water could transport bacteria down to the udder and into the milk. Most cows produce about five gallons per day, with some variation between breeds. Holsteins, the majority of the herd, are the heaviest producers, and milk from the Jersey cows has a high butterfat content. Brown Swiss, Ayrshires and a few others fill out the rest of the herd. Organic Pastures cows live as long as a decade, which is over twice as long as CAFO (Concentrated Animal Feeding Operation) cows, whose average lifespan is a short 42 months. Without the antibiotics and high-protein feed of a CAFO, the cows produce less milk but produce a higher quality of milk for a longer period of time. This may not make short-term economic sense but it makes for happy, healthy cows who produce healthful milk, which makes for healthier consumers of that milk.
After milking, the equipment is removed and the teats are dipped once more in the iodine solution. The cows, several pounds lighter, saunter back to the pasture to nibble more green grass as the milk is chilled and sent to the milk tank. The equipment and the area are cleaned and the process starts again.
The water use is surprisingly thrifty for the size of the herd, and grey water is channeled through irrigation lines back to the pastures.
As the dairy workers perform their tasks, they have constant reminders of personal responsibility, with pictures of children drinking milk and the caption, “Remember Who We Are Washing For!” The checklist for the Recognized ASCA Model Program (RAMP) hangs on a clipboard, demanding regular quality control.
The milk tank, full of very fresh, chilled milk, is transported to the creamery to be bottled. As we follow the same route, we notice the dairy air is remarkably fresh, with nary a trace of that unmistakable CAFO smell.
The creamery is cleverly constructed from two retired refrigerator trailers, outfitted simply with the necessities: reminders about cleanliness, sinks and hot water for washing, steel countertops, and a vintage bottling machine that fills up to 4000 half-gallon containers per day. A new machine, currently on order, will allow the creamery to fill gallon-sized containers, which will fulfill a long-standing request from many customers who can’t get enough of Organic Pastures’ milk.
Each batch of milk is checked for pathogens 16 times before it is sent off to one of 400 stores throughout California. Not one pathogen has been found—ever. We see the signs for handwashing and hairnets, but what is missing from this creamery are the ubiquitous tanks of toxic ammonia found in a typical dairy operation. “We don’t need it,” says Mark. “We bottle our raw Qephor [a fermented raw milk product] in here, and all that helpful bacteria keeps the pathogens in check.”
Despite warnings to the contrary on FDA Web sites, studies show that raw milk does, indeed, kill some pathogens. To prove it for himself, Mark has had Organic Pastures milk tested by BSK labs. The results showed that even when the pathogens Listeria monocytogenes, Salmonella, Campylobacter and E coli 0157:H7 were added to OPDC raw milk at extremely high levels (7 logs) they would not grow and instead died off. In other words, the pathogens failed to multiply and most didn’t survive.

Vintage bottling machine
Although Organic Pastures tried using glass containers, it proved to be too problematic and expensive. Unfortunately, the extra cost of the glass, the problems and expense of cleaning, chipping and breakage, and the added weight of the bottles made the cost prohibitive. The recyclable plastic containers in use today decrease the cost of the milk for the consumer.
Other products from the farm include aged raw cheddar cheese, truly raw almonds, cream and, of course, butter. Did I mention butter?
Throughout the tour, we were struck by the simplicity of the operation and the ingenuity and pluck that put it all together. Mark and his wife, Blaine, are the perfect ambassadors for the family farm and for raw milk. They both have backgrounds in the medical field and they love to share their knowledge. Mark is a bubbling fountain of information; his brain racing ahead and answering questions before we even know what to ask. Blaine adds a counterpoint with her thoughts and ideas, while graciously putting the needs of others before her own. Together, their warmth and hospitality is embracing.
The whole package gives us hope for the future—of family farming and of universal access to fresh, clean, raw milk. I will lift a glass to that future, and you can guess what will be in that glass.
Until next time~




















That’s what your basing your unfounded belief that raw milk kills pathogens, one study from 1956 which references older studies? Have you seen any of the new studies? Can you explain why raw milk doesn’t kill Q. Fever, Brucellosis, Tuberculosis. These are diseases that were commonly spread by raw milk prior to pasteurization. These diseases did not come about by contamination, or anti-biotic use, or feed, the cows had the illness, it was passed into the milk, a human consumed it and developed the disease. Luckily, today those diseases are pretty well in check and are not as worrisome, but one pathogen that wasn’t really around that is today is E. Coli. I would like for you to find anywhere in that paper you linked to where e. coli would be killed by “raw milk” bacteria. I would think this would not be good for the calf since most bovines have e. coli naturally occurring in their gut.
So I question the document you link, I do not believe the data is valid any longer as new studies have shown raw milk to transmit e. coli, listeria, salmonella, etc. This doesn’t include what happens when the consumer doesn’t handle it properly in their home as raw milk is a great medium to grow pathogens. But unfortunately consumers might not take those precautions believing that there is some magical bacteria in raw milk that kills the bad bacteria, which is utter non-sense.
Further, has Mark published his paper on his inoculation of pathogens into raw milk? What bacteria were originally present in the raw milk? What temperature was the raw milk kept at? How long did the test go for? What pathogens were used for the study? How did he get these pathogens? Can you describe the setting this study was conducted in? Was it controlled? Was it in a barn? Who had access to this experiment. How many samples were done? Did you calculate the confidence intervals? What was the mechanism utilized to determine bacterial counts? If sent to a laboratory how was it delivered? Was proper chain of custody procedures utilized?
I think it’s great that they put an emphasis on hand-washing. But all of that hand-washing won’t do a bit of good if the raw milk going into the container is already full of pathogens.
It’s unfortunate that people see a need to make a stand for a product that does not provide you with any benefit over the pasteurized product unless you consider a greater chance of becoming ill a benefit.
Just stop giving it to kids, their immune system can handle some dirt but it can not handle raw milk if it’s contaminated with e. coli or other pathogen.
Thanks, Jim, but – no, that 1956 study is certainly not what I based the comment upon! That’s in there to show that we’ve known this to be true for a very long time. There are newer studies on the germicidal quality of raw milk as well—I linked two more (2005, 2007) next to that one. And raw milk doesn’t kill all pathogens, but pasteurized milk is far from 100% safe either. Neither is spinach, cantaloupe, sprouts, ground turkey, water . . . Bottom line is this: We need to have safer food, which begins with the soil and farming/handling techniques. Pasteurization has its place but it treats the effect, not the cause.
Hi. I just found your post via another tour of OPDC:
http://healthytraditions.com/blog/post.cfm/certified-raw-milk-in-california-visits-to-the-two-raw-milk-dairies
It’s interesting that two parties would have such a different take on the operation.
As far as raw milk killing pathogens, you might be interested in an article I wrote at the Ethicurean:
http://www.ethicurean.com/2009/07/20/raw-milk-mem/
Amanda
Thanks, Amanda. Because of a strong history of dairy management in my family, I was most interested to see the farm for myself—particularly the health of the cows, the health of the pastures and the rotation, and making sure the claims were true (organic, pasture-raised, grass-fed) and was delighted to see that OPDC is constantly upgrading and making improvements for the sake of the cows and for the sake of the consumer (which are intrinsically tied together). I look forward to a return visit to see the new bottling machine, and I will report what I find on the next trip as well.
I appreciate that beneficial bacteria and enzymes in raw milk won’t kill all pathogens, of course, and no actual food is 100% safe. But I think we agree that our chances are much better with the helpful bacteria working for us, both in the milk and in our guts, instead of killing it.
Hi Ali. On the pathogen-killing, your original post implied that raw milk does kill pathogens, in fact citing Mark’s “study” as evidence. If you look at his BSK results, you will see that they have been widely misinterpreted causing confusion among consumers.
On dairies and change — I agree with you. My concern is the idea that OPDC are 100% grass fed as you also suggest in your post. With your dairy background you surely noticed that there is not enough grass there to meet this standard. That’s not a criticism in itself, but the marketing needs to match the reality of the farming operation.
Hello again, Amanda. The three published, peer-reviewed studies I linked to within the post discussed the bacteriocidal qualities of raw milk. I would love to see more of this nature; however, such studies are usually from countries other than the U.S. or are quite old—not much interest in funding from the big corporations.
OPDC does describe what they feed the cows on their Web site (http://www.organicpastures.com/about.html) and their description was spot on with what I saw while there.
I appreciate your comments. Because of your comments and the comments of someone who missed the linked studies completely, I’m thinking that I need to do separate posts on these two topics as they are very important. My apologies if I wasn’t clear in this post.