...are they not exposing themselves to contaminations that would be avoided via pasteurization?
Yes and no.
With raw milk, I would really say that it is buyer beware. You have to know the condition in which the cattle are kept to be ensured that you are receiving safe, unpasteurized milk. As Josh mentioned with eggs, you can also pasteurize raw milk. Heating milk to 145 degrees for 30 to 35 minutes results in pasteurized milk that still has lots of flavor. (Most milk that you get in the grocery store has undergone ultra-high temperature (UHT) pasteurization at 265 to 300 degrees. Although it is heated for only a few seconds versus half an hour, such high temperatures destroy much of the flavor and gives the milk a slight cooked flavor.) Even if you know and trust your source, I would not advocate giving raw milk to infants, the elderly, or immunocompromised persons without pasteurizing it at home first.
Most shell eggs that you get at the grocery store have not been pasteurized. At last count at Publix, I believe only one brand was pasteurized. So, whether store bought or from your local farm, you may want to pasteurize your eggs--especially if you like your eggs runny or plan to use them uncooked (as in a mayonnaise, Caesar dressing, etc.) Simply heat them in a water bath to between 130 and 140 degrees (a candy thermometer works well for this) and hold them at that temperature for four to six minutes. (Don't go above 140, though, or you may coagulate some of the proteins in the egg white).
And finally, regardless of where you get them, the most dangerous thing that you can eat is---produce! According to the CDC about 40 percent of all reported food poisoning comes from contaminated produce. So wash those greens!
Awesome info JBD. It is as I thought with regards to milk and eggs. Trust your source, buyer beware, and if you may be immune deficient...pasteurize. Wash those veggies!
Next question is with regards to poultry and meat sold from these farms. These products again appear to be labeled "not for human consumption" based on the rules now in effect. As a possible consumer this label could serve to scare me off and as a seller, I would be pretty unhappy putting that on my product.