Browsing by Author "Adebayo, O.T. & Fawole, F.J."

Now showing 1 - 1 of 1
  • Item
    Growth and reproductive performance of African giant catfish,Heterobranchus longifilis Valenciennes 1840 broodstockon ascorbic acid supplementation
    (Indian Council of Agricultural Research (ICAR), 2012) Adebayo, O.T. & Fawole, F.J.
    This study was conducted to determine the effects of different levels of ascorbic acid supplementation on growth, reproductiveperformance and larval quality of Heterobranchus longifilis female broodstock fishes. Five diets were formulated incorporatingascorbic acid at levels of 0 (control), 50, 100, 150 and 200 mg kg-1. Fish averaging 700 + 2.84 g were randomly fed with theexperimental diets for 8 weeks. Fish fed with control diet had lower weight gain than fish fed with ascorbic acid supplementeddiets (p>0.05). The total percentage weight gain and specific growth rate in all treatments were significantly different(p<0.05). The best feed gain ratio and protein efficiency ratio was recorded in 150 and 200 mg kg-1 ascorbic acid. Thepercentage fertilization and hatchability in all the treatments were significantly different. The best percentage fertilizationand hatchability was recorded in 200 mg kg-1 ascorbic acid diet. Diet supplemented with 150 mg kg-1 ascorbic acid performedbest in terms of weight of eggs and fecundity than all other treatments. The percentage survival of the progeny was alsohighest in broodstock fed with diet supplemented with 150 mg kg-1 ascorbic acid. Based on the results of this study, wesuggest that ascorbic acid needs to be supplemented at 150-200 mg kg-1 in the diet of female Heterobranchus longifilisbroodstock