Abstract
The objects of this study were to determine the effect of Saccharomycescerevisiae cell wall (SCCW) to induce immunological response of Broiler chicks thatinfected with Listeria monocytogenes . SCCW was administrated to chicks by adding30 gm / 100 kg feed. A 30 broiler chicks were distributed into 3 treatments ( 10chicks/ treatment) which were:T1 : control group for both experiment fed on (SCCW). T2 : chicks fed 30 gm / 100 kgfeed (SCCW) and experimentally infected orally by Listeria monocytogenes 0.1 mlof 1 × 109 CFU /ml. T3 : chicks were experimentally infected orally by Listeriamonocytogenes 0.1 ml of 1 × 109 CFU /ml. and study some immunological parameterincludes the concentration of - globulin, albumin, transfferin, H/L ratio, singlediffusion test, delayed hypersensitivity reaction (DWR). The result obtained revealedthat using (SCCW).increased immune response (cellular and humeral immunity)through increased of lymphocyte and decreased H/L ratio and positive reaction ofdelayed hypersensitivity also increase the percentage of - globulin, albumincompared with infected group (T3).
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