#13-055

Complete

Date Full Report Received

02/01/2016

Date Abstract Report Received

02/01/2016

Investigation

Institution:
Primary Investigator:

A previous study (circa 2000) investigated swine-use hypodermic needle strength and detection. At that time, needle detection equipment available at processing plants was entirely magnetic-based. Since this original study, processing plants have added X-Ray based technology. The purpose of this study was to determine state-of-the-industry needle strength and processing plant detection status. Strength quantification was conducted in the laboratory using identical testing equipment developed for the original circa 2000 study. Needle detection testing was investigated at five independent packing plants representing Iowa, Minnesota, and Nebraska. Needle strength and sharpness results were on-par with previous results, with very little new information gained. Detection testing measured from all needle manufacturers, needle orientation through the detector, detector technology, and processing plant indicated an overall average detection of 37.2% (464 detects/1248 passes). For all needles passed through magnetic-based detectors, a 21.4% (164/768) detection rate was measured. One particular needle tested in this study was manufactured to elicit a response through magnetic-based detectors, and its detection rate through magnetic-based detectors was 80.2% (77/96). If this particular needle was excluded from the data set, the remaining industry average detection through magnetic-based machines was 12.9% (87/672). The original study conducted in circa 2000, in a controlled laboratory setting, indicated a 14.9% detection rate for magnetic-based detectors. For all needles passed through X-Ray based technology from this current research, the overall detection rate was 62.5% (300/480).