Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/39212
Title: Efeito do fotoperíodo sobre a composição do filé de juvenis de tilápia do Nilo
Other Titles: Effect of photoperiod on filet composition of Nile tilapia juveniles
Keywords: Peixes - Composição corporal
Oreochromis niloticus
Retenção de nutrientes
Fish - Body composition
Nutrient retention
Issue Date: 2014
Publisher: Universidade Federal de Goiás
Citation: VERAS, G. C. et al. Efeito do fotoperíodo sobre a composição do filé de juvenis de tilápia do Nilo. Ciência Animal Brasileira, Goiânia, v. 15, n. 2, p. 168-173, abr./jun. 2014.
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 ºC 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 ºC 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<0.05). Therefore, it can be concluded that the photoperiod can alter Nile tilapia body composition, and the photoperiod 18L:6D contributed to the higher concentration of crude protein and lower fat deposition in Nile tilapia fillets.
URI: http://repositorio.ufla.br/jspui/handle/1/39212
Appears in Collections:DZO - Artigos publicados em periódicos



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