Protective effect of ubiquinone (coenzyme Q9) on ascites in broiler chickens.

1. The effect of ubiquinone (CoQ(9)) on ascites in broiler chickens was investigated. 2. The commercial broilers were divided into 2 groups of 100 birds each; CoQ(9) treated group and non-treated group. 3. The chickens were grown in a positive-pressured house with double high efficiency particulate air filtered intakes and exhaust, and thus were strictly isolated from infectious agents. 4. The chickens (15 to 21 d old) were exposed to cold stress in order to induce ascites. 5. The number of birds with ascites in the CoQ(9)-treated group was significantly lower than in the non-treated group. 6. Survival and production rates were better in the CoQ(9)-treated group than in the non-treated group.