Data/hora: 02/06/2024 02:12:14

Provedor de dados: | 64
País: | Brazil
Título: | Effects of digestible protein to energy ratios on growth and carcass chemical composition of siamese fighting fish (Betta splendens)
Autores: | Lemos,Marcos Vinicius Antunes de; Arantes,Thiago Quirino; Souto,Cristielle Nunes; Martins,Graciela Pessoa; Araújo,Janaína Gomes; Guimarães,Igo Gomes.
Data: | 2014-02-01
Ano: | 2014
Palavras-chave: | Protein requirement; Ornamental fish; Carcass composition; Energy requirement; Growth.
Resumo: | The expansion in the market of ornamental fish depends on the intensification of production systems and the generation of appropriate technologies. Therefore, it is necessary to know the nutritional requirements of each species for the formulation of nutritionally balanced diets. A 30-day feeding trial was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for Betta splendens fingerlings. Fifty-six all-male B. splendens with 1.03 ± 0.11 g average weight were randomly stocked into 56 1L-aquaria in a completely randomized design with a 2 x 4 factorial arrangement, comprising eight treatments and seven replication. Each fish was considered an experimental unit. Diets were formulated to contain 28.0, 35.0, 42.0 and 49.0% DP and 3,600 and 3,200 kcal/kg DE. The growth parameters evaluated in this trial were weight gain (WG), feed intake (FI), feed conversion ratio (FCR), protein efficiency ratio (PER) and specific growth rate (SGR). No difference (P &amp;gt; 0.05) was observed for WG, FCR and SGR. However, a higher FI was observed for fish fed diets containing 42.0% DP (P &lt; 0.05). A positive effect of DP and DE on PER was observed in this study. Generally, according to the increase of DE levels, a reduction on PER was observed. Based on this experimental condition, we recommend the use of 28.0% DP and 3,200 kcal/kg DE in diets for B. splendens.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100009
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/S1413-70542014000100009
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.38 n.1 2014
Fonte: | info:eu-repo/semantics/openAccess