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Identification of Escherichia coli and Salmonella enterica from Fecal Matter of Selected Birds and Assessment of their Susceptibility Towards Different Antibiotics

Identification of Escherichia coli and Salmonella enterica from Fecal Matter of Selected Birds and Assessment of their Susceptibility Towards Different Antibiotics

Abdul Majeed Saim1, Arshad Javid1, Misbah Sarwar2­, Muhammad Hafeez-ur-Rehman3 and Ali Hussain4*

1Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
2Department of Wildlife and Forestry, Government of Punjab, Pakistan
3Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore, Pakistan
4Institute of Zoology, University of the Punjab, Lahore, Pakistan
 
*      Corresponding author: ali.zool@pu.edu.pk

ABSTRACT

Birds play a critical role as a reservoir for enteric bacteria Escherichia coli and Salmonella enterica. This study aimed to investigate prevalence of E. coli and S. enterica and occurrence of their antibiotic resistance (ABR) genes in selected wild and captive bird species in Pakistan. E. coli and S. enterica were isolated from fecal samples of birds and identified by phenotypic, biochemical, and molecular characterization of ABR genes by PCR. E. coli colonies appeared circular and dark purple on EMB agar media plates while S. enterica colonies were small, circular, and red on SS agar media plates. E. coli and S. enterica isolates were found resistant to amoxicillin, ciprofloxacin, and sulfamethoxazole, while sensitive against doxycycline, gentamycin, and tetracycline. E. coli isolates showed positive results in catalase, indole, and methyl red tests while S. enterica isolates showed negative in citrate, lactose, and urease tests. E. coli and S. enterica strains were 100% and 99% identical, respectively, to previously isolated E. coli and S. enterica strains. Overall prevalence of E. coli and S. enterica was recorded as 16.55% and 2.7% respectively. Captive pigeons exhibited maximum 19.1% and 3.3% occurrence of blaTEM of E. coli and S. enterica respectively, 18.3% and 2.5% of sul3 respectively in peafowls, and 23.3% and 3.3% of qnrA respectively in captive pigeons. It has been concluded that captive birds in districts with lower elevation levels have a higher prevalence of E. coli and S. enterica at high temperatures compared to wild birds in districts with higher elevation levels.

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Pakistan Journal of Zoology

October

Pakistan J. Zool., Vol. 56, Iss. 5, pp. 2001-2500

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