Impact of Mycoplasma gallisepticum vaccines in performance and biochemical testes in broilers chickens

This study aimed to evaluate  two vaccines of Mycoplasma gallisepticum (killed and live CRDF) in broiler chicks, 130 one day old broiler chicks were randomly divided into four groups,30 birds each group., treated as follows:G1: were vaccinated with alive FMG vaccine (eye drop one drop 0.03ml/dose) , G2: the chicks were vaccinated with killed MG (0.3ml s.c)vaccine,G3: vaccinated with killed MG and alive MG vaccine G4 control group not vaccinated., Blood samples were taken from the chickens at 21 and 35 days of age to assess their performance development (body weight, weight gains, feed intake, and feed conversion coefficient) as well as their liver enzymes (ALT, AST) and kidney function (creatinine) following immunization. At 21 and 35 days old, the results of the liver enzymes AST, ALT, and kidney function (creatinine) were non-significantly different between the vaccinated groups and the non-vaccinated group (control). Additionally, at 35 days old, there is a non-significant increase in all groups compared to 21 days old. The results of body weight and weight gain showed non-significant differences between all groups that received the MG vaccine (G1, G2, G3) and the G4 control group (not vaccinated) in various time frames (1week, 2week, 3week, 4week, and 5week)