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-The objective of this work was to determine the effect of piperine as a phytogenic additive in chicken broiler diet. Seven-day-old male chicks were randomly allocated in four experimental treatments (n = 24), with four replicates (n = 6). The piperine was added to diets at concentrations of 0, 60, 120, and 180 mg kg -1 for 35 consecutive days. The following were evaluated: biochemical, hematological and histopathological parameters; performance and carcass yield. Histomorphometric analyses were also carried out. The addition of 120 and 180 mg kg -1 of piperine did not alter broiler body weight and feed conversion, whereas 60 mg kg -1 of piperine interfered positively in both parameters from 36 to 42 days of age and significantly increased the absorption surface of the duodenum and the ileum. No macroscopic alteration in organ size and color was observed in the broilers fed diets with the evaluated concentrations of piperine. The supplementation of 120 and 180 mg kg -1 of piperine is toxic to liver tissue and reduces the absorption surface of the jejune. The diet supplemented with 60 mg kg -1 of piperine is safe.Index terms: Piper nigrum, performance, phytogenic additive, sanitation. Piperina como suplemento fitogênico na dieta de frangos de corteResumo -O objetivo deste trabalho foi determinar o efeito da piperina, como suplemento fitogênico, na dieta de frangos de corte. Pintos com sete dias de idade foram distribuídos aleatoriamente em quatro tratamentos (n = 24), com quatro repetições (n = 6). A piperina foi adicionada na ração nas concentrações de 0, 60, 120 e 180 mg kg

We obtain a q-deformed algebra version of the Nambu-Jona-Lasinio model gap equation. In this framework we discuss some hadronic properties such as the dynamical mass generated for the quarks, the pion decay constant and the phase transition present in this model.Comment: 5 pages, 1 eps figure, to appear in Phys. Lett. B 448 (1999) 1-

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TheAg nucleus has been studied by in-beam p spectroscopy with the heavy-ion fusionevaporation reaction Mo( 8,3np) at 39 MeV. Excitation functions, p p tco-in-cidences, angular distributions, and DCOQ ratios were measured. A level scheme has been constructed and various bands have been identi6ed with characteristics similar to those in other A 100 nuclei. Total Routhian surface calculations predict prolate axially symmetric shapes with collective and noncollective character and satisfactorily account for most of the experimental results.PACS number(s): 21.10. Re, 23.20.Lv, 27.60. +j