Journal of Aquaculture Research & Development

Rania S Mabrok

Publications

• Research Article
  Development of Brood-stock Diets for Nile tilapia Under Hapa-in-Pond Hatchery System; Optimal Dietary Vitamin C Level for the Optimum Reproductive Performance and Fry Survival
  Author(s): Ashraf Suloma, Al-Azab M Tahoun and Rania S Mabrok Ashraf Suloma, Al-Azab M Tahoun and Rania S Mabrok
  
  The hapa-in-pond system is a hatchery technique, which, has been widely developed. In spite, of the research efforts in this field, little information is available considering the nutritional requirement of tilapia brood-stock under hapa-in-pond system hatchery technique and the effects on brood-stock reproductive performance and fry survival percentage. By taking in concern the previous points, five levels of vitamin C (0 mg/kg, 200 mg/kg, 400 mg/kg, 800 mg/kg and 1200 mg/kg) were examined for its effect on reproductive performance of tilapia brood-stock and fry survival under the hapa-in-pond system conditions. Adult males and females with mean body weights of 198 g and 206 g, respectively, with a male to female sex ratio of 1:2. Tilapia breeders were stocked at density 3 fish/ m3; 6 (2♂:4♀/hapa). Tilapia brood-stock fed diet supplemented with Vitamin C (400 mg/kg) s.. View More»
  DOI: 10.4172/2155-9546.S2-010

  Abstract PDF