E-ISSN 2536-9520 | ISSN 1110-2047
 

Original Article 


Profile of bacteria causing bovine mastitis and their antibacterial resistance

Ahmed M. Abakar, Helmy A. Torky, Samy A. Khalil.

Abstract
Bacterial mastitis is one of the most important diseases in high-production dairy cows which causing high economic losses. Staph. aureus and E. coli considered most common mastitis-causing bacterial pathogens. Therefore, 120 mastitis milk samples were collected from mastitic cattle to identify the profile of bacterial pathogens especially Staph. aureus and E. coli, in addition, studying their antimicrobial resistance. The obtained results revealed that incidence of Staph. aureus from examined mastitis milk samples was 45% (36/80) as single culture and 12.5% (10/80) as mixed culture. Incidence of E. coli from mastitis milk as a single culture was 30% (24/80) and as a mixed culture was 16.25% (13/80). In addition, out 16 samples as mixed infections summarized as following: 7 samples Staph. aureus with E. coli and 3 samples Staph. aureus with streptococcal species and 6 samples E. coli with streptococcal. Regarding to antimicrobial susceptibility, Staph. aureus was sensitive to tetracycline 41.6% followed by sulfa-trimethoprim 38.3% while E. coli strains were sensitive to tetracycline 50 % followed by Gentamycin 25%, both strains were resistant to marbofloxacin at rate 55.5 and 83.3%, respectively. Virulence genes including 23S rRNA, phoA related to specie-specific for Staph. aureus and E. coli in addition antibiotic resistant genes mecA and ampC, respectively were detected in 100% of examined strains. Detection of virulence and antibiotic resistance genes may be helpful for effective control of mastitis.

Key words: Mastitis milk, E. coli, Staphylococcus aureus, antibiotic resistance genes


 
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How to Cite this Article
Pubmed Style

Abakar AM, Torky HA, Khalil SA. Profile of bacteria causing bovine mastitis and their antibacterial resistance. AJVS. 2022; 75(2): 57-64. doi:10.5455/ajvs.64386


Web Style

Abakar AM, Torky HA, Khalil SA. Profile of bacteria causing bovine mastitis and their antibacterial resistance. https://www.alexjvs.com/?mno=64386 [Access: January 29, 2023]. doi:10.5455/ajvs.64386


AMA (American Medical Association) Style

Abakar AM, Torky HA, Khalil SA. Profile of bacteria causing bovine mastitis and their antibacterial resistance. AJVS. 2022; 75(2): 57-64. doi:10.5455/ajvs.64386



Vancouver/ICMJE Style

Abakar AM, Torky HA, Khalil SA. Profile of bacteria causing bovine mastitis and their antibacterial resistance. AJVS. (2022), [cited January 29, 2023]; 75(2): 57-64. doi:10.5455/ajvs.64386



Harvard Style

Abakar, A. M., Torky, . H. A. & Khalil, . S. A. (2022) Profile of bacteria causing bovine mastitis and their antibacterial resistance. AJVS, 75 (2), 57-64. doi:10.5455/ajvs.64386



Turabian Style

Abakar, Ahmed M., Helmy A. Torky, and Samy A. Khalil. 2022. Profile of bacteria causing bovine mastitis and their antibacterial resistance. Alexandria Journal of Veterinary Sciences, 75 (2), 57-64. doi:10.5455/ajvs.64386



Chicago Style

Abakar, Ahmed M., Helmy A. Torky, and Samy A. Khalil. "Profile of bacteria causing bovine mastitis and their antibacterial resistance." Alexandria Journal of Veterinary Sciences 75 (2022), 57-64. doi:10.5455/ajvs.64386



MLA (The Modern Language Association) Style

Abakar, Ahmed M., Helmy A. Torky, and Samy A. Khalil. "Profile of bacteria causing bovine mastitis and their antibacterial resistance." Alexandria Journal of Veterinary Sciences 75.2 (2022), 57-64. Print. doi:10.5455/ajvs.64386



APA (American Psychological Association) Style

Abakar, A. M., Torky, . H. A. & Khalil, . S. A. (2022) Profile of bacteria causing bovine mastitis and their antibacterial resistance. Alexandria Journal of Veterinary Sciences, 75 (2), 57-64. doi:10.5455/ajvs.64386





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