Perhaps you've been lectured by animal activists that smaller, backyard flocks are safety than the factory farms. Here's the research to dispel that myth. Penn State researchers have found that eggs from small flocks of chickens are more likely to be contaminated with Salmonella enteritidis as eggs sold in grocery stores, which typically come from larger flocks.
The results were published in the September 16th issue of PSU News:
That conclusion was drawn from a six-month study done last year in Pennsylvania. Researchers from Penn State’s College of Agricultural Sciences collected and tested more than 6,000 eggs from more than 200 selling points across the state for the study.
The U.S. Food and Drug Administration requires that shell-egg producers from farms with 3,000 or more chickens be in compliance with the agency’s Final Egg Rule, which is aimed at restricting the growth of pathogens.
Federal regulations for these larger flocks require placement of Salmonella-“clean” chicks, intensive rodent control, cleaning and disinfecting between flocks, environmental monitoring of pullet and layer houses, continuous testing of eggs from any Salmonella-positive houses, and diverting eggs from Salmonella-positive houses for pasteurization.
However, small flocks with fewer than 3,000 laying hens are currently exempt from the rule. Eggs from these producers often are marketed via direct retail to restaurants, health food stores and farmers markets, or sold at on-farm roadside stands.
The research highlights the potential risk posed by the consumption of eggs produced by backyard and small layer flocks. And, analysis of the Salmonella enteritidis present in the eggs from small flocks shows they are the same types commonly reported to the Centers for Disease Control and Prevention from human foodborne outbreaks.