Occurrence of Coagulase-negative Staphylococcal mastitis in dairy cows
El-Diasty, M., Talaat, H., Atwa, S., Elbaz, E., Eissa, M. (2019). Occurrence of Coagulase-negative Staphylococcal mastitis in dairy cows. EKB Journal Management System, 20(3), 35-39. doi: 10.21608/mvmj.2019.23.207
Mohamed El-Diasty; Hager Talaat; Samar Atwa; Elzahraa Elbaz; Mohamed Eissa. "Occurrence of Coagulase-negative Staphylococcal mastitis in dairy cows". EKB Journal Management System, 20, 3, 2019, 35-39. doi: 10.21608/mvmj.2019.23.207
El-Diasty, M., Talaat, H., Atwa, S., Elbaz, E., Eissa, M. (2019). 'Occurrence of Coagulase-negative Staphylococcal mastitis in dairy cows', EKB Journal Management System, 20(3), pp. 35-39. doi: 10.21608/mvmj.2019.23.207
El-Diasty, M., Talaat, H., Atwa, S., Elbaz, E., Eissa, M. Occurrence of Coagulase-negative Staphylococcal mastitis in dairy cows. EKB Journal Management System, 2019; 20(3): 35-39. doi: 10.21608/mvmj.2019.23.207

Occurrence of Coagulase-negative Staphylococcal mastitis in dairy cows

Mansoura Veterinary Medical Journal
Article 2, Volume 20, Issue 3, September 2019, Page 35-39  XML PDF (801.49 K)
Document Type: Original Articles
DOI: 10.21608/mvmj.2019.23.207
View on SCiNiTO View on SCiNiTO
Authors
Mohamed El-Diasty1; Hager Talaat1; Samar Atwa2; Elzahraa Elbaz; Mohamed Eissa3
1Animal Health Research Institute- Mansoura, Egypt.
2Department of Internal Medicine, Infections and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt.
3Department of Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, P.O. 44519, Zagazig, Egypt.
Abstract
Objective: To study the prevalence of Coagulase-negative Staphylococci in clinical and subclinical mastitis in dairy cows. Design: Case-control study. Animals: 415 lactating Holstein cows. Procedures: A total of 896 quarter milk samples were collected aseptically from 415 dairy cows for bacteriological examination (mastitic cows, n=50; healthy cows, n=174). Identification of different bacterial isolates followed by antibiotic sensitivity test for Coagulase-negative Staphylococci (CNS) was carried out, using disc-diffusion method against 13 different antibiotics . Results: 224 out of 415 cows (54%) were proven to be mastitic (12% clinical mastitis, 42 % subclinical mastitis). Coagulase-negative Staphylococci were the prevalent isolate (32%). CNS was recorded in 25.7 % of clinical cases and 34% of subclinical mastitis. The antibiogram of CNS isolates against 13 different antibiotics revealed high level of resistance to ampicillin (85%) and oxacillin (85%). However, they were less resistant to vancomycin (5%). The other antibiotics showed variable levels of resistance ranging from 40-75%. Conclusion and clinical relevance: Coagulase-negative Staphylococci were the most common bacteria isolated from mastitic cases. Multi-drug resistance was observed among CNS with high resistance to ampicillin and penicillin, so the use of such B-lactam antibiotics should be restricted specially if there were suspected cases of Coagulasenegative Staphylococci.
Keywords
Mastitis; Coagulase-negative Staphylococci; Antibiogram; Cows
Statistics
Article View: 171
PDF Download: 218