This study aimed to evaluate the inclusion of pirarucu by-product acid silage meal in diets for laying hens on performance and egg quality. One hundred sixty eight Hissex White laying hens 73-wk-old were distributed in completely randomized design with seven treatments (0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0%) and four replicates of six birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of pirarucu by-product meal levels were determined by polynomial regression. Differences (p<0.05) were observed in all variables of performance, in egg weight, yolk height and yolk pigmentation, with pirarucu by-product meal inclusion in diets showed better results than control diet. The pirarucu by-product acid silage meal can be used as alternative food in diets for commercial laying hens. Up to the 2.5% inclusion level there wasn't negative effect in performance and egg quality.
A propagação da espécie Tachia grandiflora Maguire & Weaver foi ensaiada, pela observação do efeito de diferentes concentrações do ácido indolbutírico (AIB) sobre o enraizamento de estacas. Foram utilizadas 5 concentrações de AIB (0, 50, 100, 200 e 400 ppm) em estacas de 7 cm de comprimento, distribuídas por blocos ao acaso, com 5 repetições, cada uma delas composta de 5 estacas, em condição de viveiro, com areia lavada como substrato. A maior sobrevivência observada (80 %) foi para o tratamento com 400 ppm de AIB, não foi possível definir a influência do hormônio sobre a propagação. A propagação de T. grandiflora por estaquia no viveiro e in situ foi demonstrada com uma média de 75 % de sobrevivência, comprovando o potencial deste método para aumentar as quantidades disponíveis dessa espécie relativamente rara.
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