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Appl Environ Microbiol. 1969 March; 17(3): 352-354
Copyright © 1969 American Society for Microbiology. All Rights Reserved.

Fluorescent-Antibody Technique in Detection of Salmonellae in Animal Feed and Feed Ingredients

¹ Microbiology Laboratories, Veterinary Department, Chow Research Division, Ralston Purina Company, St. Louis, Missouri 63199

ABSTRACT

Comparative studies of fluorescent antibody procedure and a cultural method for the detection of Salmonella were made on 1,013 feed and feed-ingredient samples. The agreement between the two methods was 92.1%. There were more false positives (5.7%) than false negatives (2.2%). Of the 22 false negatives, 15 (68%) were obtained on meat meal. Of the total number of samples, 37% were meat meal. An additional study of 73 samples of meat meal indicated that correlation between methods was better than correlation between samples.