The Use of Some Recent Techniques For Detection of The Immune Response of The Layer Chickens Vaccinated With Mycoplasma Vaccines

Mycoplasma gallisepticum (MG) is associated with chronic respiratorydisease in chickens and infectious sinusitis in turkeys.Mycoplasma synoviae (MS) infection most frequently occurs as asubclinical upper respiratory disease that may become systemic and resultin infectious synovitis that is an acute or chronic infectious disease ofchickens and turkeys. MG and MS infections cause economic losses due to include reduced egg production, lowered hatchability of chicks and downgraded meat quality. This study was planned to evaluate the immunological effect ofprepared MG and MS bacterins in layer chickens. 1- For evaluation of these vaccines, field experiment on 400 one day - old chicks were divided into four groups (100 for each). The first group vaccinated with MG bacterin, the second vaccinated with MS bact