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Effect of Dietary Maltose on growth and feed Utilization of Nile Tilapia (O. Niloticus) Fingerlings

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Author Affiliations

  • 1Faculty of Marine Resources, Al Asmarya University, Zliten, LIBYA
  • 2Faculty of Science and Technology, Universiti Malaysia Terengganu, MALAYSIA
  • 3Faculty of Fisheries and Aqua-Industry, Universiti Malaysia Terengganu, MALAYSIA

Res. J. Recent Sci., Volume 4, Issue (IVC-2015), Pages 1-5, (2015)

Abstract

An experiment was conducted to determine the effects of dietary maltose level on growth performance and feed utilization of Nile tilapia, Oreochromis niloticus fingerlings. Five treatments, including control with three replicates with setup. Randomized distributed of fingerlings (mean weight, 2.1 ±0.2 g) were stocked in 30 fishes per tank, which attached with recycled water system comprising of mechanical filtration and aerated using air stones. The temperature was 27.5±0.25°C throughout the experimental period. Pellet of formulated-diets containing 0.0, 20, 25, 30 or 35% maltose was handed fed to apparent satiation twice daily at a rate of 5% of live body weight. The fishes were weighed once every 2 weeks during the experiment for 12 weeks. No casualty of Nile tilapia was recorded throughout the experiment. Fishes fed with 35 % maltose exhibited significantly higher growth performance; body weight and weight gain compared with control. The best specific growth rate (SGR) was obtained of fishes fed with feed E (1.44±0.04), but no significant difference compared with control, while fishes fed with feed B exhibited the lowest SGR value (1.34±0.05). Feed conversion ratio (FCR) in fishes fed with 35% maltose (1.01±0.02) was greater than 20, 25 or 30% maltose (1.16 to 1.26). Although, fishes fed with 20% maltose exhibited the lowers FCR (1.26±0.03) compared to all groups, but it’s not different significantly compared to 35% maltose treated fish and control (1.07±0.01). This finding indicated that incorporation of maltose in fish diet had been efficiently utilized for Nile tilapia and contributed to their body-mass.

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