immune response of broilers to vitamin c and coenzyme q10 under cold stress condition

this experiment was conducted to determine the effect of vitamin c (vc) and coenzyme q10 (coq10) onimmunity response of broilers in cold stress condition using 500 male chicks in a completely randomizeddesign with 5 treatments and five replicates. treatments were: positive control (pc, normal conditionsgrowth without antioxidants), negative control (nc, cold stress without antioxidants), cold stress + vc(300 mg/kg diet), cold stress + coq10 (40 mg/kg diet) and cold stress + vc + coq10 at above mentioneddoses. to induce cold stress, from day 15 until end, temperature fixed at 15oc. vaccine titers, humeraland cellular immune response and relative immune organs weight were studied. results showed that coldstress decreased relative spleen weight but there was no significant difference between treatments.relative weight of bursa was increased in cold stress condition (p