David Kradel Herbert o Poultry W Pointers 1 3 O Bl Herbert Siegel Donald Sin; Competitive Exclusion: A Potential Tool for Pathogen Control Morris G. Mast, Ph.D. Prof, of Food Science Food-borne illness has received much attention in the media during the past two to three years. Names of pathogenic bacteria, such as sal monella, listeria and campylobac- KEN CLUGSTON (717) 665-6775 CRAFT-BILT CONSTRUCTION INC. FARM-HOME BUILDING 1242 Breneman Road MANHEIM, PA. 17545 PH: (717) 665-4372 BUILDING & REMODELING FOR DAIRY RESIDENTIAL SWINE POLE BUILDINGS BEEF STORAGE ATTENTION HOG PRODUCERS! Are You Tired Of Fixing Steel And Wood Penning In Your Hog Bam? Then Try Our Concrete Hog Penning. Steam Cured Reinforced Concrete To Serve For Generations Priced Competitive To Steel Penning Weighs Only 13 Lbs. Per Sq. Ft. Very Easy To Install P.V.C. Channel To Anchor On Floor Gates Can Be Attached To Steel Channel That Fits On Top and Ends Of All Concrete Panels. Syri-Con Precast Concrete Corp. 477 E. Farmersvllle Rd., New Holland, PA 17557 717-355-2361 ordan Milton Madison ;letary Owen Keene ter, previously used only by scien tists, are becoming household words. These bacteria are respon sible for many of the food-borne illnesses in humans. Numerous foods can serve as carriers of these microorganisms, however, foods of animal origin, such as poultry, beef, swine and seafood, most fre quently are involved. Call For Your Nearest Dealer The potential presence of patho gens is a major concern to people involved with the production, pro cessing and marketing of these foods. For years scientists have been investigating causes of and seek ing controls for food-borne illness. Results of some of this research were reported in September, 1989, at an international conference on poultry pathogens (Colonization Control of Human Enteropatho gens in Poultry). Among the approaches dis cussed was competitive exclusion (CE). The goal of CE is to prevent colonization of pathogens within poultry. This is done by exposing newly hatched'chicks to non pathogenic bacteria commonly found in healthy poultry. After these bacteria become established or colonized in the new bird, sub- FRANK A. FILLIPPO, INC. - WANTED - DISABLED & CRIPPLED COWS. BULLS & STEERS Competitive Prices Paid Slaughtered under government inspection Call: Frank Fillippo - Residence - 215-666-0725 Elam Ginder - 717-367-3824 C.L. King - 717-786-7229 sequent exposure to pathogens will result in reduced colonization by the “bad” bacteria. Does this theory work? To date, the largest field trials involving CE have been conducted in the Netherlands. Scientists used 284 flocks (143 treated with microflo ra, and 141 untreated) involving 8 million broilers to determine if CE is effective in curbing salmonella colonization. The number of salmonella-positive flocks was reduced from 24 percent in untreated flocks to 15 percent in the CE flocks. In another field study, 58 flocks (29 treated and 29 untreated, involving 200,000 broilers) were examined for the CE effect tow ards the pathogen Campylobacter. The number of campylobacter positive flocks was reduced from 45 percent to 31 percent. The sci entists did find, however, that FALL CLEANUP Move out front with the best value in a NEW GEMINI DIRECT DRIVE hydrostatic zero-tum-radius mower! Grasshopper makes it simple. Dual-lever fingertip steering and dual-hydrostatic drive let you control speed, turns and braking, or change direction of travel instinctively and instantly! True zero-turning radius and outfront deck design let you slip between and around obstacles, mow square corners, reach under shrubs, trim flush against walls and around trees...all with unlimited visibility and case. You’re in and out of tight spots in seconds! Choose from six versatile models, ranging from 11 to 21 hp, cutting widths from 35 to 72 inches and a complete lineup of year-round attachments SEE YOUR LOCAL PARTICIPATING GRASSHOPPER DEALER FOR A FREE CATCHER WITH PURCHASE OF ANY GRASSHOPPER ALL MODELS INCLUDED IF YOU CANNOT FIND YOUR LOCAL DEALER CALL: LAWN CARE DISTRIBUTORS Lancaster Farming Saturday, October 14,1989-Dll cross contamination of animals and of carcasses beyond the pro duction phase (i.e., transportation and processing) resulted in similar levels of pathogens on the final carcasses. Although many questions remain regarding the CE theory, the above data indicate that this approach may be one tool in com bating pathogen colonization in poultry. However, it must be real ized that the control (not even mentioning total elimination) of bacterial pathogens is an extreme ly complex problem. Is CE the answer to pathogens such as salmonella in poultry? No. Is it a partial answer? Perhaps. It is one approach among the many needed to find the answers to the problem of pathogen control. For example, at this conference it was suggested that CE, in conjunction Martindale, PA 215-445-4541 (Turn to Page Dl3)
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