In this meta-analytical review in vivo experimental trials on inactivation of aflatoxin (AF) by using adsorbents and biological products as a feed additive in poultry feed are briefly summarized. For this purpose, 206 researches performed in 39 different countries were examined and listed by country of first author, with main results presented in their summary. The aim of this review is to present the results of the experiments for nutritionists in the feed industry and scientists and to provide a basis for total evaluation on the basis of regional results. For research on AF in poultry feed, it is preferable to evaluate the preventive efficacy of feed additives “as total” in terms of performance, biochemical-hematological, immunological and gross and histo-pathological parameters, comparing AF treated control diets with AF plus feed additive diets. Scientists can assess the preventive efficacy and practical usability of feed additives in more detail by following the titles of articles, associate authors and/or materials and methods of related articles. In fact, for application in practice, focus on limiting AF contamination by optimizing harvesting and storage conditions should be stressed instead of expecting miracles from feed additives which have shown positive effects under experimental conditions.