Prevent Multiplication of Pathogens in Feed
Sponsored LinksThe lack of moisture is the primary reason pathogens do not rapidly multiply in feeds. Thus, the primary task in preventing pathogen multiplication in feed is moisture control. Obvious sources of moisture, such as roof leaks, uninsulated pipes or areas where wind can blow rain in, must be eliminated. It should also be recognized that water should not be used to clean feed manufacturing facilities, unless there is no other alternative.
Contamination of conveying equipment may be associated with areas of high humidity or moisture. In feed mills utilizing a heat-treatment process (e.g., pelleting or extrusion), the environmental conditions (i.e., temperature and humidity) of the cooler are ideal for the establishment of a microcosm of bacteria and mold. Dust and feed particles adhere to the internal surfaces of the cooler and become media for pathogen growth. As feed passing through the cooler comes into contact with these particles, the feed becomes contaminated, and this contamination spreads throughout the downstream conveying system. This route of contamination of feed/feed ingredients occurs not only in feed mills, but also in rendering plants, vegetable oilseed plants and blending operations. Implementation of a dry-cleaning process or disinfection of equipment often aids in addressing the problem.
July 03 2008 09:39 am | Article