Data/hora: 09/06/2024 08:33:18

Provedor de dados: | Pesquisa Agropecuária Brasileira
País: | Brazil
Título: | Cannibalism, growth performance, and body composition of giant trahira juveniles under different photoperiods
Autores: | Ramos,Shayenne Elizianne; Carvalho,Aline Ferreira Souza de; Castro,Tássia Flávia Dias; Vasconcelos,Ana Carina Nogueira; Veras,Galileu Crovatto; Mourão Júnior,Carlos Alberto; Murgas,Luis David Solis.
Data: | 2018-06-01
Ano: | 2018
Palavras-chave: | Hoplias intermedius; Fish; Lipids; Muscle.
Resumo: | Abstract: The objective of this work was to determine the effect of photoperiod on the cannibalism, growth, and body composition of giant trahira (Hoplias intermedius) juveniles. A completely randomized design was employed, with four photoperiods - 0L:24D, 6L:18D, 12L:12D, and 18L:6D, hours of light (L): dark (D) - and four replicates, for a period of 90 days. The analyzed parameters were: cannibalism, growth in weight and length, food consumption, feed conversion, protein efficiency rate, muscle growth, and body composition (moisture, lipid, ash, and crude protein). Fish from the 12L:12D photoperiod showed the highest survival rate and no cannibalism, as well as a great uniformity for length and mass values at the end of the experiment. The best photoperiod for giant trahira juveniles is 12L:12D, as these fish showed growth uniformity and no cannibalism, while fish from the 6L:18D and 18L:6D groups had a greater diameter of white muscle fibers and a higher frequency of greater diameter fibers. Giant trahira showed the lowest value for lipids at 6L:18D and the highest value at 12L:12D. Photoperiod affects survival and cannibalism; regarding body composition, only lipids are influenced by photoperiod.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600664

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/s0100-204x2018000600002
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.53 n.6 2018
Fonte: | info:eu-repo/semantics/openAccess