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| RODRIGUES,Ana Paula Oeda; SILVA,Marcello Cappio Nunes; BERETTA,Emiliano Salvatore; FONSECA,Flávio Augusto Leão da; PARISI,Giuliana; CONCEIÇÃO,Luís Eugênio Castanheira da; GONÇALVES,Ligia Uribe. |
| ABSTRACT For some fish species, dietary taurine supplementation has been proven necessary in feeds with considerable utilization of vegetable proteins to substitute fishmeal. Pirarucu, Arapaima gigas feeds mainly on taurine-rich animal items in nature, therefore this study aimed to evaluate the effect of dietary taurine supplementation (0, 0.5, 1, 1.5 and 3%) on the growth and blood physiological parameters of juvenile pirarucu. A commercial feed was utilized as the basal diet for the experimental diets. Three hundred fish (20.8 ± 2.3 g) were randomly distributed in 15 tanks and fed for 28 days. At the end of the trial, dietary taurine supplementation did not affect fish growth, feed consumption and feed efficiency. The original amounts of taurine (0.18%)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fishmeal; Vegetable proteins; Methionine; Arapaima gigas. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400289 |
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| RODRIGUES,Ana Paula Oeda; LIMA,Adriana Ferreira; ANDRADE,Caniggia Lacerda; MEDEIROS,Rafaella Machado dos Santos de. |
| ABSTRACT Pirarucu is one of the main fish species for the development of aquaculture in the Amazon. In this study, the optimal feeding frequency for juvenile pirarucu was assessed based on growth and feed efficiency. Juvenile pirarucu weighing ca. 80 g were fed once, twice, three or four times daily until apparent satiation for 63 days. Fish fed three or four times per day presented higher growth, feed intake, and fat body content than those fed once or twice per day. There was no significant difference for feed conversion ratio, and protein and energy retention rates among treatments, suggesting that increased feeding frequency did not affect feed utilization efficiency. Mean feed intake per meal was higher when fish were fed once per day, possibly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed management; Feed utilization; Feeding practice; Osteoglossiformes. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000100011 |
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