Hstapathologic studies of staphylococcus aureus and its toxins on chickens

One hundred and eighty chicks and chickens were used to study theeffect of Staph. aureus and its toxins on chickens. The ages of theexperimentally used chickens were (one-day-28-days and 45 days). Thesechickens were divided into 2 groups. Each group consisted of 90 chicks andchickens divided into 4 subgroups. The first 3 subgroups were inoculated byStaph. aureus, while the fourth subgroup was used as a control group.Group I were inoculated by Staph. aureus orally through a stomachtube into the 3 subgroups (A, B & C), while subgroup D given orally 1 m1 ofnormal saline (control subgroup).Group IT were inoculated by Staph. aureus parentrally into the 3subgroups (E, F & G). While subgroup H were inoculated parentrally 1 m1of normal saline (control subgroup).Five chickens of each subgroup were sacrificed on the 2nd and 4th weekP.I. The clinical signs and the pathological findings of the sacrificed and died birds were recorded.In general the parentrally inoculated group showed lesions more severewide spread than the orally inoculated group. The mortalities were seen