New data: Original XPC's impact on Salmonella typhimurium 
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Jonathan Broomhead, Ph.D. Diamond V
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Commercial broilers challenged with S. typhimurium show reduced load and prevalence of the bacterium, along with improved feed conversion.
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In the news
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USDA-FSIS announces plan to reduce
Salmonella in meat and poultry
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Eric Gingerich, DVM,
Diamond V
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On December 4, 2013, USDA-FSIS announced its comprehensive plan for reducing Salmonella in the raw meat and poultry products it inspects. Its present programs have helped reduce Salmonella prevalence on broiler carcasses by 75 % since 2006.
Continued reductions are needed to further the efforts in reducing the estimated 1.3 million cases of foodborne salmonellosis in humans every year. To aid this effort, USDA-FSIS has issued a Salmonella Action Plan with ten components. Selected components with importance to poultry are summarized as follows:
Component 1: Proposed Poultry Slaughter Rule - This plan has been under test for the last 20 years in selected slaughter plants to allow USDA inspectors to spend more time on food safety-related activities (testing, examining HACCP-related activities, running quality control checks, etc.) rather than individual bird inspection. More of the defect inspection of individual birds will be switched to plant employees. Federal inspectors will continue to perform quality checks to assure compliance to present standards for fecal contamination and other defects. This system will allow the plant to possibly increase line speeds to 175 birds per minute, up from 140. This increase will only be allowed if the plant can show compliance with present standards for removing defects from the line.
Component 5: Modify Posting of Salmonella Categories - At present, only Category 3 plants (plants that have failed the testing of the most recent set of samples) are web-posted publicly each month. FSIS is considering posting Category 2 and perhaps Category 1 plants to put further pressure on plants to improve.
Component 6: Performance Standard Related Activities - An important aspect will be to establish a performance standard for cut-up chicken parts and one for comminuted poultry*. This will aid Salmonella
reduction by putting interventions in place to comply with the standard much like the performance standard for carcasses.
Component 9: Pre-harvest Related Activities - FSIS wants to develop a document summarizing lessons learned from previous poultry pre-harvest meetings and to continue working with industry members on specific interventions used successfully for intervening in outbreak situations. Also, FSIS plans to organize and host a pre-harvest poultry meeting that focuses on these issues, which may eventually be used to guide policies or best management practices.
* USDA definition of comminuted poultry product is any non-breaded, non-battered, raw or otherwise not-ready-to-eat (NRTE) poultry product that has been (1) ground, (2) mechanically separated, or (3) hand or mechanically deboned and further chopped, flaked, minced, or otherwise processed to reduce particle size.
Learn more about the Salmonella Action Plan
Learn more about the proposed Poultry Slaughter Rule at the National Chicken Council's website
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Research Review
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Here's a sneak peek at two abstracts we'll present at IPSF in Atlanta this month
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Jonathan Broomhead, Ph.D., Diamond V
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Diamond V will present two abstracts at the 2014 International Poultry Scientific Forum meetings in Atlanta, GA, this month (January 27-28th). The
abstracts include research results from a broiler necrotic enteritis challenge study at Southern Poultry Research, and in vitro research evaluating the effects of Original XPC on growth of Clostridium perfringens and C. septicum.
Abstract # T121; Oral presentation, Room B-314; Tuesday, January 28 at 9:15 AM
Title: Effects of feeding Diamond V Original XPC™ and bacitracin or virginiamycin to broilers during a necrotic enteritis challenge
Overview: A broiler necrotic enteritis (NE) challenge was conducted, testing the effects of feeding XPC alone or combined with virginiamycin or bacitracin. Broilers were challenged with C. perfringens on days 19, 20, and 21, and then scored for NE lesions. NE lesion scores were lower and animal performance better in all XPC-treated groups compared to challenged controls. Additive performance and lesion benefits were observed when XPC and virginiamycin were combined.
Abstract # P260; Poster, Rooms B-308-309; Monday, January 27 at 4:00-6:00 PM
Title: Effects of Diamond V Original XPC on growth of Clostridium perfringens and C. septicum in a complex fecal microbial population
Overview: In vitro research was conducted at the Diamond V Research and Innovation Center using the Intestinal Activity Modifier Model (IAMM). Fresh broiler feces were collected to make fecal inocula containing the live microbiota found in the lower gut. Predigested feed, with or without XPC, was then added. C. perfringens or C. septicum was added to the fecal inocula and incubated for 24 hrs. Volatile fatty acid (VFA) production (indicator of microbial population), pH, and Clostridia growth were measured. Improvements in VFA production and reduced pH were observed in both assays with the addition of XPC. The addition of XPC to the broiler fecal inocula suppressed both C. perfringens and C. septicum growth.
See the abstract here.
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Jan. 28-30
Booth 2439
Atlanta
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Coming next month...
Preliminary research indicates Diamond V Original XPC can impact incidence and load of Campylobacter in broilers and turkeys. In the February issue of PoultryAdvisor, we'll highlight studies conducted by Dr. C. Hofacre, University of Georgia, and Dr. D. Smith, NCSU.
These data add further evidence of the benefits of using Original XPC for food safety purposes. Research already shows Original XPC supports the bird's immune system, gut morphology, and beneficial microbiota, all of which help the bird to resist Salmonella heidelberg, S. enteritidis, S. typhimirium, S. arizonae and S. kentucky.
Please see us at the Diamond V Booth #2439 January 28-30 at the IPPE in Atlanta, or contact your Diamond V poultry specialist for more details.
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