Cattle Feed Contamination

food safety


BioGX offers a unique reagent that detects ruminant DNA (bovine, caprine, and ovine) in cattle feed. This reagent has been independently evaluated using very strict performance criteria and was recenty converted to the BioGX Sample-Ready™ lyophilized format. The reagent is now utilized as part of an official method in many government laboratories, including the US FDA. Note: this reagent is has only been validated on the Cepheid SmartCycler II.

BioGX Ruminant DNA Panel Description
YLM Ruminant DNA Dual Probe, IAC.
  • Product #204-0003
  • Duplex panel
  • Packaging: 48 Sample-Ready™ reagents [4 reactions/tube, 12 tubes/pouch]

Please Note: Due to the innovative nature of our products, new reagents are frequently being brought online. Please check our site regularly for the latest updates.

Ruminant DNA Panel Development Information

Background

The US FDA and many regulatory agencies outside of the USA have implemented a ban on the use of most mammalian protein in feeds for ruminant animals in order to prevent the establishment and spread of BSE through animal feed.

Publication Reference

Development of a Multiplex Real-Time PCR Assay for the Detection of Ruminant DNA

Authors: Ekins, Jason1; Peters, Sharla M.1; Jones, Yolanda L.1; Swaim, Heidi1; Ha, Tai2; La Neve, Fabio3; Civera, Tiziana3; Blackstone, George4; Vickery, Michael C.L.4; Marion, Bill4; Myers, Michael J.1; Yancy, Haile F.5

Source: Journal of Food Protection®, Volume 75, Number 6, June 2012 , pp. 1107-1112(6) Publisher: International Association for Food Protection

Affiliations: 1: U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, 8401 Muirkirk Road, Laurel, Maryland 20708, USA 2: Nebraska Department of Agriculture, 301 Centennial Mall South, Lincoln, Nebraska 68508, USA 3: Department of Animal Pathology, Faculty of Veterinary Medicine, University of Torino, via Leonardo da Vinci 44, 10095 Grugliasco, Torino, Italy 4: BioGX, Inc., 1500 1st Avenue North, Unit # 34, Birmingham, Alabama 35203, USA 5: U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, 8401 Muirkirk Road, Laurel, Maryland 20708, USA. haile.yancy@fda.hhs.gov

Abstract: The U.S. Food and Drug Administration (FDA) has previously validated a real-time PCR-based assay that is currently being used by the FDA and several state laboratories as the official screening method. Due to several shortcomings to the assay, a multiplex real-time PCR assay (MRTA) to detect three ruminant species (bovine, caprine, and ovine) was developed using a lyophilized bead design. The assay contained two primer or probe sets: a “ruminant” set to detect bovine-, caprine-, and ovine-derived materials and a second set to serve as an internal PCR control, formatted using a lyophilized bead design. Performance of the assay was evaluated against stringent acceptance criteria developed by the FDA’s Center for Veterinary Medicine’s Office of Research. The MRTA for the detection of ruminant DNA passed the stringent acceptance criteria for specificity, sensitivity, and selectivity. The assay met sensitivity and reproducibility requirements by detecting 30 of 30 complete feed samples fortified with meals at 0.1% (wt/wt) rendered material from each of the three ruminant species. The MRTA demonstrated 100% selectivity (0.0% false positives) for negative controls throughout the assessment period. The assay showed ruggedness in both sample selection and reagent preparation. Second and third analyst trials confirmed the quality of the written standard operating procedure with consistency of results. An external laboratory participating in a peer-verification trial demonstrated 100% specificity in identifying bovine meat and bone meal, while exhibiting a 0.03% rate of false positives. The assay demonstrated equal levels of sensitivity and reproducibility compared with the FDA’s current validated real-time PCR assay. The assay detected three prohibited species in less than 1.5 h of total assay time, a significant improvement over the current real-time assay. These results demonstrated this assay’s suitability for routine regulatory use both as a primary screening tool and as a confirmatory analysis.