02234naa a2200337 a 450000100080000000500110000800800410001902400270006010000200008724501450010726000090025252012490026165000250151065000250153565000100156065000220157065000100159265000220160265000100162465000130163465000130164770000200166070000300168070000250171070000230173570000230175870000210178170000230180270000310182577300400185621225842020-05-27       2020    bl uuuu     u00u1 u    #d7 a10.1111/are.146712DOI1 aSILVA, R. S. da  aPalm kernel meal (Elaeis guineensis) as a substitute for corn (Zea mays) in diets of Tambaqui (Colossoma macropomum).h[electronic resource]  c2020  aTwo experiments were carried out to evaluate the effects of palm kernel meal (Elaeis guineensis) as corn (Zea mays) substitutes in tambaqui (Colossoma macropomum) diets based on zootechnical performance, health, characteristics of the muscle, yield and economic efficiency. The first one was carried out in a recirculation aquaculture system for 75 days wherein tambaquis received diets with 0% (T0), 25% (T25), 50% (T50), 75% (T75) and 100% (T100) of corn replacement by palm kernel meal. The second experiment, conducted in ponds for 184 days, tambaquis were fed T0 and T25 diets (selected because showed greater weight gain without health damage). Final weight and weight gain of tambaquis were impaired by the increasing levels of this ingredient on diets, and the feed conversion ratio was worse. The protein efficiency ratio and specific growth rate gradually reduced, while the total number of leucocytes and neutrophils gradually increased. Cholesterol and triglycerides decreased in T75 and T100. Variables analysed in experiment 2 were not affected by treatment, except muscle lipids. Palm kernel meal can replace up to 25% of corn in tambaqui diets since it maintains a balance in economic and zootechnical performance of production.  aAlimento Para Animal  aColossoma Macropomum  aDieta  aElaeis Guineensis  aMilho  aNutrição Animal  aPeixe  aTambaqui  aZea Mays1 aLOPES, J. R. T.1 aESPÍRITO SANTO, R. V. do1 aSANTOS, M. A. S. dos1 aCORDEIRO, C. A. M.1 aYOSHIOKA, E. T. O.1 aCORREA, R. de O.1 aMARTINS JUNIOR, H.1 aLOURENÇO JUNIOR, J. B. de  tAquaculture Research, p. 1-9, 2020.