Growth comparison of Asian Nile and red tilapia strains in controlled and uncontrolled farm conditions

Maria Rowena R. Romana-Eguia, Minoru Ikeda, Zubaida U. Basiao, Nobuhiko Taniguchi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Growth of several genetically improved Nile tilapia (GIFT or Genetically Improved Farmed Tilapia, FaST or Freshwater Aquaculture Center Selected Tilapia, SEAFDEC-selected) and domesticated red tilapia (BFS or Binangonan Freshwater Station, NIFI-red or National Inland Fisheries Institute red, HL or Hacienda Luisita) stocks were compared in controlled (tank) and uncontrolled farm conditions (lake-based cages) with unselected NIFI or Chitralada Nile tilapia as control. Specific growth rate differed significantly (P = 0.009) in tank-reared Nile tilapia stocks where GIFT grew best at 1.358%/day followed by FaST (1.307%/day), control stock NIFI (1. 257%/day) and SEAFDEC-selected (1.202%/day). Genetic effect explained 84.4% of the variance in growth of Nile tilapia in tanks. Although Nile tilapia growth in cages followed the same trend where GIFT grew best at 1.570%/day, no significant stock differences (P = 0.479) were noted. Meanwhile, red tilapia reared in either tanks or cages showed no significant stock differences in terms of growth. However, survival of the red tilapia stocks in cages differed significantly with HL having the highest percentage survival at 93.3%. The different growth responses of the Nile tilapia stocks especially under controlled (tank) farm conditions were largely due to genetic factors (stock differences). Under uncontrolled farm conditions, environmental factors were generally observed to have also affected the survival and to some extent, the growth of Asian Nile and red tilapia stocks.

Original languageEnglish
Pages (from-to)1205-1221
Number of pages17
JournalAquaculture International
Volume18
Issue number6
DOIs
Publication statusPublished - 2010 Mar 10

Keywords

  • Genetically improved
  • Growth
  • Lake cages
  • Nile and red tilapia
  • Tank culture

ASJC Scopus subject areas

  • Aquatic Science
  • Agronomy and Crop Science

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