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Article citations


Dahl, J., Wingstrand, A., Nielsen, B. and Baggesen, D.L. (1997) Elimination of Salmonella typhimurium Infection by the Strategic Movement of Pigs. Veterinary Record, 140, 679-681.

has been cited by the following article:

  • TITLE: Quantitative Microbiological Evaluation of Salmonella Typhimurium Shed in Diarrhea, Loose, and Normal Stools of Infected Pigs

    AUTHORS: Tsuyoshi Tanaka, Yasuo Imai, Naosuke Kumagae, Takashi Sasaki, Narutoshi Ochiai, Katsuyoshi Uruno, Haruki Kitazawa, Tadao Saito, Shizuo Sato

    KEYWORDS: Fecal Shedding, Quantitative Evaluation, Salmonella Typhimurium, Swine, Transmission

    JOURNAL NAME: Open Journal of Veterinary Medicine, Vol.4 No.4, April 29, 2014

    ABSTRACT: Control of within-herd transmission of Salmonella is important for reducing the prevalence of this organism on pig farms and for preventing Salmonella-contamination of pork. At the farm level, understanding the within-herd transmission of Salmonella can lead to more effective control. Salmonella infection is dependent on the inoculation dose; hence, quantitative evaluation of Salmonella shed in feces would provide useful information for developing effective measures. In this study, to reproduce and evaluate the number of Salmonella shed in diarrhea, loose stools, and normal feces, weaned pigs were inoculated with 3.2 × 109, 3.2 × 107, and 3.2 × 105 cfu of Salmonella Typhimurium, respectively. The number of S. Typhimurium shed in the feces peaked within 1 week post-inoculation in every group and the most amount of diarrhea and loose stools were observed within 2 weeks post-inoculation. Diarrhea occurred 10 times (six pigs), and loose stools were observed 25 times (11 pigs). The average concentration of S. Typhimurium shed in diarrhea, loose stools, and normal feces was 1.0 × 108, 1.6 × 104, and 7.1 × 101 cfu/g feces, respectively. These data suggest that diarrhea and loose stools are significant sources of within-herd transmission of Salmonella. Moreover, as some of the normal feces contained >1.0 × 106 cfu/g of S. Typhimurium, even normal feces could be a source of within-herd transmission of Salmonella. At Salmonella-positive farms, reduction of the amount of Salmonella shed even in normal feces would lead to better control of within-herd transmission of Salmonella. These data can contribute to the control of within-herd transmission of Salmonella, particularly during the weaning period.