Oct 23, 2020 · This study evaluated the nutritional value and amino acid profiles of digestate from a biogas plant, as a substitute for rice bran, in tilapia feed and measured its effects on fish yields and production costs. Four isonitrogenous (24% crude protein) diets were formulated, using digestate at levels of 0%, 10%, 20%, and 30%, with respective reductions in rice bran content
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