Short Communications

Detection of Salmonella Carriers in Sheep and Goat Flocks of Bushehr and Lorestan Provinces, Iran


Background:    Salmonellosis is an infectious and a food-borne disease of humans and animals. The initial source of the infection is the intestinal tracts of birds and other animals. Apparently healthy animals can become subclinical carriers and persistently shed Salmonella in their feces which can act as a reservoir for the pathogen. The aim of this study is to detect the carriers of Salmonella among apparently healthy sheep and goat flocks of Bushehr and Lorestan provinces, Iran.Methods:    A total of 389 fecal samples were aseptically collected from the rectum of apparently healthy sheep and goat flocks of Bushehr and Lorestan provinces. Bacteriological culture was conducted using selenite cystine, Rappaport–Vassiliadis, brilliant green and xylose lysine deoxycholate agar. Suspected colonies were inoculated in to TSI, peptone water, Simmon’s Citrate, Urea medium and MRVP. Sero-groups were detected by antisera.              Results:    Two samples from 189 samples (1.05%) were positive for Salmonella in Bushehr province. Salmonella abortusovis and Salmonella typhimurium were detected following serotyping. No Salmonella carriers were detected in Lorestan province.Conclusion:    As the rate of carriers of Salmonella was low, the risk of food-borne salmonellosis due to consumption of small ruminant's meat is low, especially in the condition of well cooked meat. Since S. abortusovis was detected, strategies of prevention and control of abortion due to this agent must be taken to reduce the economic losses. Moreover, the presence of S. typhimurium is a hazard to public health and people who have close contact to sheep and goats.

Chandra M, Singh BR, Shankar H, et al. Prevalence of Salmonella antibodies among goats slaughtered for chevon in Bareilly (Northern India). Prev Vet Med 2007; 8:1-8.

Davies RH, Dalziel R, Gibbens JC, et al. National survey for Salmonella in pigs, cattle and sheep at slaughter in Great Britain (1999–2000). J Appl Microbiol 2004; 96:750-760.

Gopinath S, Carden S, Monack D. Shedding light on Salmonella carriers. Trends Microbiol 2012; 20: 320-327.

Hjartardóttir S, Gunnarsson E, Sigvaldadóttir J. Salmonella in sheep in Iceland. Acta Vet Scand 2002; 43: 43-48.

Markey BK, Leonard FC, Archambault M, et al. Collection and submission of diagnostic specimens. In: Clinical Veterinary Microbiology, second Ed. MOSBY Elsevier, 2013: 3-7.

Mohammed Saleh WM. Isolation of Salmonella spp. from slaughtered sheep in Basra. Bas J Vet Res 2012; 11: 159-166.

Molla W, Molla B, Alemayehu D, et al. Occurrence and antimicrobial resistance of Salmonella serovars in apparently healthy slaughtered sheep and goats of central Ethiopia. Trop Anim Health Pro 2006; 38: 455-462.

OIE. Salmonellosis. in: OIE Terrestrial Manual 2010. [Internet]. 2010 [cited 2014 Aug 2014]. Available from:

Pardon P, Sanchis R, Marly J, et al. Experimental ovine salmonellosis (Salmonella Abortusovis): pathogenesis and vaccination. Res Microbiol 1990; 141: 945-953.

Prescott LM, Harley JP, Klein DA. Human Disease caused by bacteria. in: Microbiology. 5th ed. McGraw-Hill Science, Boston, USA, 2002: 899-940.

Scott L, Menzies P, Reid-Smith R, et al. Antimicrobial resistance in fecal generic Escherichia coli and Salmonella spp. obtained from Ontario sheep flocks and associations between antimicrobial use and resistance. Can J Vet Res 2012; 76: 109-119.

Tajbakhsh F, Tajbakhsh E, Rahimi et al. Determination of antibiotic resistance in Salmonella spp. isolated from raw cow, sheep and goat’s milk in Chaharmahal va Bakhtiyari Provience, Iran. G V 2013; 10: 681-685.

Teklu A, Negussie H. Assessment of risk factors and prevalence of Salmonella in slaughtered small ruminants and environment in an export abattoir, Modjo, Ethiopia. Am Eurasian J Agri Environ Sci 2011; 10: 992-999.

Verbrugghe E, Boyen F, Gaastra W, et al. The complex interplay between stress and bacterial infections in animals. Vet Microbiol 2012; 155: 115-12.

IssueVol 5 No 3-4 (2016) QRcode
SectionShort Communications
Bushehr Iran Lorestan Salmonella Small ruminant

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How to Cite
Esmaeili H, Kalateh Rahmani H. Detection of Salmonella Carriers in Sheep and Goat Flocks of Bushehr and Lorestan Provinces, Iran. J Med Bacteriol. 2017;5(3-4):50-53.