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| Veras,Galileu Crovatto; Murgas,Luis David Solis; Rosa,Priscila Vieira; Zangeronimo,Márcio Gilberto; Ferreira,Matheus Soares da Silva; Leon,Jonathan Antonio Solis-De. |
| The objective of this study was to evaluate the effect of photoperiod on locomotor activity, growth and gonadal development in Nile tilapia (Oreochromis niloticus) fingerlings. A completely randomised design was used, with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D and 24L:0D) and four replicates, with the aquarium as the experimental unit. One hundred and sixty fingerlings of tilapia weighing 3.21±0.05 g and measuring 4.35±0.07 cm each were distributed among 20 aquaria of 20 L in a recirculation system with the temperature controlled to 27 °C, with eight fish per aquarium. Feeding was carried out twice daily for 75 days, with extruded feed containing 40% crude protein. The fingerlings subjected to a photoperiod of 12L:12D as well as those under... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed intake; Fish; Locomotor rhythm; Oreochromis niloticus; Performance; Sexual maturation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001200002 |
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