Browsing by Author "Pudadera Jr., Beato J."
BookP Kungvankij, LB Tiro Jr., BJ Pudadera Jr. & IO Potestas - 1986 - Network of Aquaculture Centres in Asia
Series: Aquaculture extension manual; No. 11Information is presented regarding the biology and culture of Lates calcarifer in order to serve as a practical guide for extension workers and farmers. Hatchery design, seed production and hatchery techniques, culture of seabass and financial aspects of the seabass culture industry are described.
Conference paperLB Tiro, BJ Pudadera, IO Potestas & P Kungvankij - In JL Maclean, LB Dizon & LV Hosillos (Eds.), The First Asian Fisheries Forum. Proceedings of the First Asian Fisheries Forum, 26-31 May 1986, Manila, Philippines, 1986 - Asian Fisheries SocietyTraditional shrimp (Penaeus monodon) farming is characterized by low yields, 100-300 kg/ha/yr. To provide farmers with appropriate technology that can immediately improve pond yield with minimal investment, experiments were conducted in brackishwater earthen ponds in two phases. The first phase was to evaluate the optimum stocking density without transfer of stock during the culture period up to harvest time. In the second phase, the best stocking density in the first phase was selected to determine the effect of transfer to newly-prepared ponds at 45-day and 60-day intervals. In the first phase, the ponds were stocked with hatchery-bred fry at the stocking rates of 1, 2 and 4/m2 with no supplementary feeding for the first two months of culture. Feed was introduced after the second month at 6% body weight for the third month and at 4% body weight on the fourth. The yields after four months were 171 kg., 317 kg and 382 kg/ha/crop with survival rates of 85%, 83% and 74%, respectively. The stocking density of 2/m2 was selected for the second phase experiment. The yield was 422 kg, 525 kg and 372 kg/ha/crop at 45 days and 60 days transfer and nontransferred, respectively.
BookP Kungvankij, LB Tiro Jr., BJ Pudadera Jr., IO Potestas, KG Corre, EL Borlongan, GA Talean, LF Bustilo, ET Tech, A Unggui & TE Chua - 1986 - Network of Aquaculture Centres in Asia
Series: Aquaculture extension manual; No. 14Details are given of factors to be taken into account for successful hatchery operation. The following aspects are covered: 1) site selection; 2) hatchery design and construction; 3) life cycle; 4) preparation of broodstock for spawning; 5) larval feed; 6) spawning, hatching and larval rearing facilities; 7) spawner selection and egg collection 8) nauplii hatching and transportation; 9) larval rearing; 10) routine hatching, management; 11) port-larvae nursery; and 12) larval harvesting and transportation.