Determinação de valores energéticos em alimentos utilizados para codornas japonesas

Abstract

The experiment was accomplished in the quail production sector of the José do Rosário Vellano University (UNIFENAS) with the objective of determining the energy values of 12 feeds for laying japanese quails 280 quails aged 19 weeks were submitted to the traditional method of total excreta collection in a randomized block design with the experimenal unit made up of ten birds The experiment lasted 32 days and was divided into four trials of eight days each where two groups of feeds were studied (protein and energy) with five replicates each protein of animal origin (meat and bone meal 45% fish meal 54% feather and viscera meal) and soybean meals 1 and 2 - 45% as well as energy feeds of plant origin (millet sorghum and whole rice bran) and oil and fats (refined soybean oil bird fat bovine lard and swine fat) The feeds replaced the reference diet based on corn and soybean meal in natural matter (NM) in 20% 30% 40% and 10% respectively Simultaneously five replicates of six birds each were placed to fast for determination of the endogenous losses The variables analyzed were the values of apparent metabolizable energy (AME) true metabolizable energy (TME) and AME and TME corrected by nitrogen balance (AMEn and TMEn) as well as metabolization coefficients of gross energy (MGEC) The protein sources with the exception of feather and viscera meal presented values of AMEn higher than those found in the Brazilian table for birds and swine meat and bone meal presenting the greatest MGEC (P<0.01) 74.06% while feather and viscera meal the lowest 56.24% Out of the energy feeds studied with the exception of sorghum values of AMEn superior to those referenced in the Brazilian table for birds and swine were found both refined soybean oil and swine fat presenting the highest MGEC (P<0.01) 95.81% and 93.32% respectively while whole rice bran the lowest 61,13% The values found of AMEn for meat and bone meal fish meal feather and viscera meal and soybean meals 1 and 2 were respectively 2,796 +- 46 3,035 +- 88 3,461 +- 87 3,149 +- 55 and 3,231 +- 76 kcal/kg of dry matter and for millet sorghum whole rice bran refined soybean meal bird fat bovine lard and swine fat were 3,581 +- 81; 3,943 +- 128 2,563 +- 165 8,827 +- 122 8,720 +- 33 7,641 +- 147 and 8,674 +- 110 kcal/kg of dry matter respectively