author(s)
Madhuri Hedau, RS Ingole, SW Hajare, MV Ingawale, SV Kuralkar and SJ Manwar

abstract
The present study was conducted to investigate the effect of individual and combined toxicity of chlorpyrifos and acetamiprid on growth parameters in broilers in different doses at various intervals. The study was conducted on 252, day old broiler birds in month of March 2016. All the acetamiprid treated birds resulted in a significant (P≤0.05) decrease in feed consumption, body weight, body weight gain and increased FCR. Chlorpyrifos treated birds showed increased weight gain and lowered FCR in individual doses however combined toxicity groups showed decreased weight gain and increased FCR. Highest mortality was recorded during 1^st week in group G (3 birds). Adverse effects of chlorpyrifos and acetamiprid toxicity were supported by the varying degree of toxic signs in birds of treatment groups. The study indicated the adverse effects of these insecticides, either alone or in combination on growth parameters in broilers.