Antibiotic susceptibility profiles for mastitis treatment

Susceptibility tests were performed on milk samples representing prevalent mastitis infections in certain herds. Susceptibility patterns of the same bacterial species from several mastitis infections in the same herd were consistent. The herd antibiotic susceptibility profiles were used as a basis f...

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Bibliographic Details
Published in:	Journal of the American Veterinary Medical Association Vol. 187; no. 7; p. 709
Main Authors:	Hinckley, L S, Benson, R H, Post, J E, DeCloux, J C
Format:	Journal Article
Language:	English
Published:	United States 01-10-1985
Subjects:	Ampicillin - therapeutic use Animals Anti-Bacterial Agents - therapeutic use Cattle Cephalothin - therapeutic use Erythromycin - therapeutic use Female Mastitis, Bovine - drug therapy Mastitis, Bovine - etiology Microbial Sensitivity Tests Penicillins - therapeutic use Staphylococcal Infections - drug therapy Staphylococcal Infections - veterinary Streptococcal Infections - drug therapy Streptococcal Infections - veterinary
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Summary:	Susceptibility tests were performed on milk samples representing prevalent mastitis infections in certain herds. Susceptibility patterns of the same bacterial species from several mastitis infections in the same herd were consistent. The herd antibiotic susceptibility profiles were used as a basis for selecting antibiotics for treatment of all such mastitis cases in that herd. A high degree of correlation was seen between the susceptibility test results and treatment results. Susceptibility patterns of the same bacterial species from mastitis infections in different herds varied greatly, which indicated that any one antibiotic would not work equally well against the same bacterial infection in every herd. Therefore, treatment should be selected on the basis of susceptibility test results. When both Streptococcus and Staphylococcus mastitis occurred in the same herd, the susceptibility patterns for the 2 bacterial species varied widely. Therefore, for herds that experienced both streptococcal and staphylococcal mastitis, antibiotics to which both bacterial species were susceptible were used for treatment.
ISSN:	0003-1488