The effect of vitamin C on growth factors, survival, reproduction and sex ratio in guppy (Poecilia reticulata).
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2010, Vol 3, Issue 3
Abstract
This study was conducted to examine the effects of dietary vitamin C (Ascorbic Acid, AA) on growth factors, survival, reproductive performance and sex ratio in guppy (Poecilia reticulata Peters,1859). Guppies were divided into 5 treatments with triplicate groups and fed with one of 5 diets for 20 weeks. The experimental vitamin C diets were formulated to contain 400, 800, 1200 and 2000 mg AA kg-1 (treatment 1, 2, 3 and 4 respectively) with 1 control group. The data obtained from the trial were subjected to one-way analysis of variance (ANOVA) to test for effects of dietary treatments. In vitamin C treatments the body weight increase (BWI), percent body weight increase (PBWI), specific growth rate (SGR), daily growth rate (DGR) and reproductive performance of guppies were increased significantly with increasing the levels of vitamin C (P<0.05) and highest BWI, PBWI, SGR and DGR were observed in treatment 4. There were no significant differences in sex ratio observed between the treatments. In survival rate there was significant difference between treatment 2 with treatments 1, 3 and control (P<0.05). This study indicates that BWI, PBWI, SGR and DGR and reproductive performance can be improved by dietary vitamin C supplementation and also may be concluded that the vitamin C requirement of guppies fish for optimum growth and reproductive performance is 2000 mg/kg of dry diet.
Authors and Affiliations
Bahareh Mehrad, Mohammad Sudagar
Keywords
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