02302naa a2200289 a 450000100080000000500110000800800410001910000170006024501150007726000090019250001450020152012920034665000220163865000150166065000280167565000160170365300310171965300200175065300210177065300230179165300250181465300220183970000180186170000180187970000250189777300900192220162802017-05-25       2015    bl uuuu     u00u1 u    #d1 aNOFFS, A. P.  aCommon snook fed in alternate and continuous regimens with diet supplemented with Bacillus subtilis probiotic.  c2015  aTítulo em português: Robalo?flecha alimentado em regimes alternado e contínuo com dieta suplementada com o probiótico Bacillus subtilis.  aThe objective of this work was to evaluate the addition of Bacillus subtilis probiotic to the feed of common snook (Centropomus undecimalis) fingerlings, in alternate and continuous regimens. Six hundred and sixty fish, with verage length of 5.90±0.88 cm and weight of 1.92±0.28g, were stocked in 12 cages of 1.0 m 3 , with 55 fish each. The experimental design was completely randomized, with three treatments and four replicates. The treatments consisted of diet with the addition of probiotic, provided in alternate regimen for 7 days and in continuous regimen; besides a control without probiotic in the feed. Zootechnical performance, body composition, immune response, and blood parameters were evaluated. No significant differences were observed in zootechnical performance indexes and in body composition of fish treated with probiotic, when compared to the control. Fish from the alternate regimen showed an increment in respiratory burst and a lower total erythrocyte count than fish from the continuous regimen and the control. Fish from the continuous regimen did not differ from those of the control. The addition of Bacillus subtilis does not increase growth rates of common snook fingerlings; however, it has an immunostimulant action when supplied in alternate regimen.  aBacillus subtilis  aHematology  aCentropomus undecimalis  aHematologia  aExploração respiratória  aImmunostimulant  aImunoestimulante  aMarine aquaculture  aPiscicultura marinha  aRespiratory burst1 aTACHIBANA, L.1 aSANTOS, A. A.1 aRANZANI-PAIVA, J. T.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 50, n. 4, p. 267-272, abr. 2015.