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Poultry and Laboratory Animal Nutrition
Asian-Australasian Journal of Animal Sciences 2011;24(12): 1757-1762.
https://doi.org/10.5713/ajas.2011.11124    Published online October 24, 2011.
Effect of Aflatoxin on Feed Conversion Ratio in Broilers: A Meta-analysis
R. Umaya Suganthi, K. P. Suresh, R. Parvatham
Aflatoxins are natural contaminants of poultry feeds and feed ingredients and cause liver damage, immunosuppression, reduction in performance and mortality in broilers. A number of studies have been carried out to study the effects of aflatoxin on feed conversion ratio in broilers. The results on feed conversion ratio of 10 research articles in broilers fed with aflatoxin from first day of age to six weeks of age were compiled and were subjected to meta-analysis. Chi-square test and Tau2 (heterogeneity co-efficient) were applied to test for significance of heterogeneity of studies. To integrate results, fixed effect model by Inverse Variance method (IV method) was used when heterogeneity was insignificant and otherwise random effect model by DerSimonian and Laird Method (DL method) was used. The results of meta-analysis showed that the adverse effect of aflatoxin on feed conversion ratio at the end of first week was negligible, second week was medium and third to six weeks was very large.
Keywords: Aflatoxin; Feed Conversion Ratio; Broilers; Meta-analysis

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