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Apparent Digestibility of Different Ingredients in Diets for Bullfrog Rana catesbeiana Tadpoles |
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| Authors: | Edney Murillo Secco Marta Verardino De Stéfani Rose Meire Vidotti |
| Institution: | Centro de Aquicultura–Universidade Estadual Paulista -"Campus" de Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane, s/n, Jaboticabal –SP Brazil |
| Abstract: | The objective of this study was to determine apparent digestibility of protein and energy of ingredients commonly present in rations fed to bullfrog tadpoles Rana catesbeiana such as corn, soybean meal, wheat meal, rice bran, poultry by-product meal, blood meal, fish meal, corn starch and soybean oil. A completely randomized design was used to test ten experimental diets with four replicates. About 30% of the reference diet was replaced by the test ingredients, except for soybean oil that was used at 10% ratio and 0.5% of chromium oxide as inert marker. The values of apparent digestibility coefficient of crude protein (ADC The results showed that the ingredients of plant origin, except for rice bran, had good digestibility, thus indicating that tadpoles can effectively use plant protein. In this trial, the least digestible ingredients were blood meal and rice bran, thus indicating that the use of such ingredients in bullfrog tadpole diets should be limited. |
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