<b>Milling Degree in Pellet Ration Ingredients for Piavuçu (<em>Leporinus macrocephalus</em>) Fingerlings</b> - DOI: 10.4025/actascianimsci.v27i1.1247

Abstract

125 fingerlings with initial weight of 3.25 ± 0.94 g and 6.29 ± 0.63 cm of initial length were used, distributed at an entirely randomized delineation in 25 aquariums with capacity of 35 L. The treatments consisted of the milling of the ration ingredients in mill with bolters of opening of 0.50; 0.75; 1.00; 1.25 and 1.50 mm, with respective average geometric diameter (DGM) of 245.50, 317.23, 345.29, 366.04 and 450.28 µm. Differences (p < 0.05) were not observed in the average final length, average final weight, apparent alimentary conversion, profit of daily weight and tax of protein efficiency of the different degrees of milling in function of the analyzed parameters. The velocity of food transit was bigger for the diets with bigger particles (345.29, 366.04 and 450.28 mm). Fingerlings of piavuçu can be fed with rations, using DGM of the ingredients varying from 245.50 to 450.28 µm, without causing damage to their performance