1. EFEITO DO FOTOPERÍODO SOBRE A COMPOSIÇÃO DO FILÉ DE JUVENIS DE TILÁPIA DO NILO
- Author
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Galileu Crovatto Veras, Luis David Solis Murgas, Marcio Gilberto Zangeronimo, Priscila Vieira Rosa, José Rafael Miranda, and Marcos Ferreira Brabo
- Subjects
composition ,nutrient retention ,Oreochromis niloticus ,Agriculture ,Animal culture ,SF1-1100 - Abstract
This study aimed to evaluate the effect of the photoperiod on the fillet composition of Nile tilapia juveniles. We employed a completely randomized design with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D, 24L:0D) and four replications. We used 160 Nile tilapia juveniles, distributed in 20 tanks containing 20 liters of water, in a recirculation systems, at controlled temperature of 27 °C and density of eight fish per tank. Fish were fed twice a day with commercial extruded feed containing 40% crude protein. Samples of the fillet at the end of 75 days were collected and stored in a freezer at -80 °C for subsequent analysis of chemical composition. There was no effect of photoperiod on moisture and ash content of the fillet (P>0.05). The period 18L:6D showed higher amounts of protein in the fillet, as well as lower amounts of fat (P
- Published
- 2014
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