400 swabs were collected from 200 horses (100 apparently healthy
and 100 diseased ones) and 200 donkeys (100 apparently healthy and
100 diseased ones). These samples were taken from abscess at lymph
nodes, nose and rectum of equine animals.
The incidence of Strept. equi sub. sp. equi was 52 (26%) in 200 horses
and 32 (16%) in 200 donkeys. This incidence of this microorganisms
was 25 (12.5%) and 20 (10%) in diseased horses and donkey,
respectively while, in an apparently healthy ones, it was 27 (13.5%)
and 12 (6%) in horses and donkey respectively.
The rate of isolation of Strept. equi sub. sp. equi was 27 (51.92%) and
12 (37.5%) in apparently healthy horses and donkey while, in
diseased ones, it was 25 (48.8%) and 20 (62.5%) in horses and
donkeys respectively.
The isolates of Strept. equi sub. sp. equi were sensitive to ampicillin,
with activity percent (95.24%) then to tetracycline (83.33%),
streptomycin (83.33%) and gentamycin (83.33%), on other hand they
were less sensitive to erythromycin (35.91%), kanamycin (41.67%)
and lincomycin (35.71%).