EFFECT OF PHOTOPERIOD ON FILET COMPOSITION OF NILE TILAPIA JUVENILES

Authors

  • Galileu Crovatto Veras Universidade Federal do Pará (UFPA) Professor Adjunto da Faculdade de Engenharia de Pesca
  • Luis David Solis Murgas Universidade Federal de Lavras (UFLA) Professor Associado do Departamento de Medicina Veterinária
  • Marcio Gilberto Zangeronimo Universidade Federal de Lavras (UFLA) Professor Adjunto do Departamento de Medicina Veterinária
  • Priscila Vieira Rosa Universidade Federal de Lavras (UFLA) Professora Associada do Departamento de Zootecnia
  • José Rafael Miranda Universidade Federal de Lavra (UFLA) Professor Adjunto do Departamento de Medicina Veterinária
  • Marcos Ferreira Brabo Universidade Federal do Pará (UFPA) Professor Assistente da Faculdade de Engenharia de Pesca

DOI:

https://doi.org/10.5216/cab.v15i2.22238

Keywords:

Aquaculture

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<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.

KEYWORDS: composition, nutrient retention, Oreochromis niloticus.

 

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Author Biographies

Galileu Crovatto Veras, Universidade Federal do Pará (UFPA) Professor Adjunto da Faculdade de Engenharia de Pesca

Instituto de Estudos Costeiros

Faculdade de Engenharia de Pesca

Área: Nutrição de Organismos Aquáticos e Piscicultura

Luis David Solis Murgas, Universidade Federal de Lavras (UFLA) Professor Associado do Departamento de Medicina Veterinária

Departamento de Medicina Veterinária

Área: Nutrição e Reprodução de Peixes de Água Doce

Marcio Gilberto Zangeronimo, Universidade Federal de Lavras (UFLA) Professor Adjunto do Departamento de Medicina Veterinária

Departamento de Medicina Veterinária

Área: Produção Animal

 

Priscila Vieira Rosa, Universidade Federal de Lavras (UFLA) Professora Associada do Departamento de Zootecnia

Departamento de Zootecnia

Área: Nutrição de Peixes

José Rafael Miranda, Universidade Federal de Lavra (UFLA) Professor Adjunto do Departamento de Medicina Veterinária

Departamento de Medicina Veterinária

Área: Morfofisiologia da Reprodução Animal

Marcos Ferreira Brabo, Universidade Federal do Pará (UFPA) Professor Assistente da Faculdade de Engenharia de Pesca

Faculdade de Enhenharia de Pesca

Área: Aquicultura/ Piscicultura Continental

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Published

2014-06-29

How to Cite

VERAS, G. C.; MURGAS, L. D. S.; ZANGERONIMO, M. G.; ROSA, P. V.; MIRANDA, J. R.; BRABO, M. F. EFFECT OF PHOTOPERIOD ON FILET COMPOSITION OF NILE TILAPIA JUVENILES. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 15, n. 2, p. 168–173, 2014. DOI: 10.5216/cab.v15i2.22238. Disponível em: https://revistas.ufg.br/vet/article/view/22238. Acesso em: 27 jul. 2024.

Issue

Vol. 15 No. 2 (2014)

Section

Animal Production

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