Clinicopathologic studies on the effect of aivlosin as antimycoplasmal drug in chickens

Summary:- Respiratory diseases associated with Mycoplasma gallisepticum infection is of continuing economic concern to poultry industry throughoutthe world. Control of mycoplasmosis frequently based on intensive use ofantimycoplasmal drugs. Aivlosin is a recent drug introduced in this field.Three hundreds and thirty, one day old, Mycoplasma free malebroiler chickens were used in this experimental work. Seventy chicks werekept as normal control group (non infected - non treated) and ten chicksused for confirmation of Mycoplasma free status. Two hundreds and fiftychicks were divided into two main experiment as follow:The first experiment: 120 chicks were divided into 6 equal groupseach of 20 chicks:Group 1: Treated with aivlosin 20 mg/kg body weight orally from 1-5 dayof age and samples were collected at 1 week of age.Group 2: Treated with aivlosin 20 m~kg body weight orally from 1-5 dayof age and samples were collected at 2 week of age.Group 3: Treated with aivlosin 20 mg/kg body weight orally from 1-5 dayof age and samples were collected at 3 week of age.Group 4: Treated with aivlosin 20 mg/kg body weight (therapeutic dose)from 1-5 day of age and another therapeutic dose from 21-25day of age and samples were collected at 4 week of age.