PERFORMANCE OF NILE TILAPIA FED DIETS CONTAINING MEAL RADISH FORAGE

• Published in: Boletim do Instituto de Pesca Vol. 35; no. 3; pp. 451 - 459
• Main Authors: dos Santos, VG, Fernandes Junior, AC, Koch, JFA, Barros, M M, Guimaraes, I G, Pezzato, LE
• Format: Journal Article
• Language: Portuguese
• Published: 01.01.2009
• Subjects: Freshwater; Oreochromis niloticus
• ISSN: 0046-9939

Alternative protein sources have been studied in order to reduce feed costs. In a completely random experimental design (five treatments and six replicates) 180 Nile tilapia fingerlings were distributed in 30 aquaria (50 L). The fish were fed isoprotein (28% digestible protein) and isoenergetic (3000 kcal digestible energy kg super(-1)) diets where soybean meal was substituted by fodder radish meal at the following levels: 0, 12.5, 25, 50 and 75%. Performance and chemical composition of the fillet were determined after 90 days. It was conclude that fodder radish meal can substitute soybean meal up to 25% without any interference on performance and fillet composition of Nile tilapia fingerlings.Original Abstract: Fontes proteicas alternativas tem sido estudadas com o intuito de reduzir o custo da racao. Foram distribuidos 180 alevinos de tilapia-do-Nilo (2,0 g), em 30 aquarios (50 L), submetidos a um delineamento inteiramente casualizado (cinco tratamentos e seis repeticoes). Os peixes foram arracoados com dietas isoproteicas (28,0% proteina digestivel) e isoenergeticas (3.000 kcal de energia digestivel kg super(-1) de racao), onde a proteina do farelo de soja foi substituida pela proteina do farelo de nabo forrageiro em 0; 12,5; 25; 50 e 75%. Apos 90 dias, foram determinados o desempenho produtivo e a composigao qulmica do file. Conclui-se que o farelo de nabo forrageiro pode substituir at6 25,0% da proteina do farelo de soja, sem prejulzos ao desempenho produtivo e a composicao bromatologica do file de alevinos de tilapia-do-Nilo.