IGNATIUS JUNCEN RIU BERE Pengarang Catootjie L. Nalle, S.Pt, M.Agr.St., Ph.D Dosen Pembimbing 1 Max A. J Supit, S.Pt., GDipsc., M.FoodTech Dosen Pembimbing 2 Dr. Cytske sabuna, S.Pt., M.Si Penguji 1 drh. Aven Bernard Oematan, M.Sc Penguji 2 AHMAD FADIL Contributor

This study was conducted with the aim of measuring and comparing the growth performance of starter phase broilers fed with rations containing mycotoxins and supplemented with toxin binder (mycosorb). This study was designed using a 2x2 factorial completely randomized design so that there were four combinations of feed treatments. The first main factor is the level of aflatoxin (<0.28 ppb and 2.58 ppb), while the second main factor is the binder of fungal toxins (added and not added), so that four combinations are obtained, namely control ration, control diet plus 0.15% mycosorb. , the control ration contained aflatoxin 0.28 ppb and the control diet contained 2.58 ppb aflatoxin and 0.15% mycosorb supplementation. Corn contaminated with aflatoxins was obtained by growing the fungus Aspergillus flavus almiah on maize for three months. The variables measured in this study were ration consumption, body weight gain, ration conversion and mortality of broilers aged 21 days. The results of this study indicated that there was no interaction between aflatoxin and mycosorb (P> 0.05) on the growth performance of 21 day old broilers. Aflatoxin level had a very significant effect (P <0.05) on ration consumption, feed conversion and mortality. Meanwhile, fungal poison binder supplementation had no significant effect (P> 0.05) on the growth performance of 21 day-old broilers. In conclusion, the level of aflatoxin and mycosorb had no effect on the growth performance of 21 day old broiler chickens. The level of aflatoxy in the ration has an effect on growth performance except for the body weight gain of broiler chickens aged 21 days. Meanwhile, the fungus poison binder has no effect on the growth performance of 21 day old broiler chickens. It is necessary to do further research on the effect of aflatoxin in the ration with a higher level combined with several binder of fungal toxins on the growth performance of broiler chickens aged 21 days