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Digestible lysine requirement of Nile tilapia fingerlings fed arginine-tolysine-balanced diets
Provedor de dados: 96
Autores: Furuya,Wilson Massamitu; Graciano,Themis Sakaguti; Vidal,Luiz Vítor Oliveira; Xavier,Tadeu Orlandi; Gongora,Leonardo Dantas; Righetti,José Sérgio; Furuya,Valéria Rossetto Barriviera.
This study was conducted to determine the digestible lysine requirements of Nile tilapia fingerlings. Fish (n = 300; average initial weight = 1.44 g) were distributed 15 300-L aquariums, in a completely randomized design with five treatments and three replicates, and fed extruded diets containing 11.3, 13.7, 16.1, 18.4 or 20.8 g/kg of digestible lysine. The arginine:lysine ratio was maintained at 1.3:1. All fish were fed diets containing 281 g/kg of digestible protein and 3,372 kcal digestible energy/kg, hand-fed until apparent satiation. There was no effect of the dietary lysine levels on survival rate, or protein and ash body rates. With increasing levels of lysine in the diet, a quadratic effect on weight gain, feed conversion, protein efficiency ratio,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Fish; Growth; Protein deposition.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300003