Journal
ARQUIVO BRASILEIRO DE MEDICINA VETERINARIA E ZOOTECNIA
Volume 68, Issue 6, Pages 1705-1712Publisher
ARQUIVO BRASILEIRO MEDICINA VETERINARIA ZOOTECNIA
DOI: 10.1590/1678-4162-8473
Keywords
biodiesel; performance; feed efficiency; condition factor; glycerol
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This study examined the level of crude glycerin in total replacement of soybean oil and partial replacement of corn in diets for tambaqui without ingredient interfering on the growth performance of these animals. The study was conducted at the Federal University of Tocantins, evaluating five levels of crude glycerin inclusion (0%, 7.5%, 10%, 12.5%, and 15%) in 3 replicates with 10 animals each (n = 150 tambaqui.) These animals were fed the experimental diets for a period of 75 days (15 days of adaptation and 60 days of trial), at the end of this period the animals were restrained to measure the values of the growth performance of animals (Specific growth rate, apparent food conversion, feed efficiency, hepatosomatic index, weight gain, and condition factor). During the study period, there were no deaths and in all indices evaluated, only the animal's condition factor presented statistical difference when comparing the initial and final periods of the experiment. The inclusion of up to 15% crude glycerin in tambaqui diets in total replacement of soybean oil and partial replacement of corn can be used without prejudice to the growth performance of the species studied.
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