Browsing by Author "Coniza, Eliseo"
Conference paperBJ Pudadera Jr., KG Corre, E Coniza & GA Taleon - 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 SocietyAn experiment on the integrated farming of broiler chickens with milkfish (Chanos chanos), tilapia (Oreochromis niloticus) and shrimp (Penaeus indicus) in brackishwater ponds was conducted in 1,000-m2 ponds of the SEAFDEC Research Station at Leganes, Iloilo, Philippines. Tested were varying densities of tilapia (500, 1,000, 1,500 and 2,000 for Treatments I-IV, respectively) with fixed densities of 5,000 shrimp and 200 milkfish per 1,000-m2 pond. Poultry houses were constructed at the middle of each pond so that fresh chicken wastes would drop directly to the pond. Each unit was stocked with 90 broiler heads of three size groups, or a total of 180 heads for 120 pond culture days. Stocking, transfer and harvest of poultry were done every two weeks. Results indicated an average net production of shrimp of 19.15 to 28.38 kg/1,000 m2; milkfish, 7.51 to 11.74 kg/1,000 m2; tilapia, 33.68 to 66.97 kg/1,000 m2 and chicken broilers, 180.90 to 217.39 kg/1,000 m2. Statistical analysis revealed that the best net production of tilapia was obtained at a stocking density of 15,000/ha.
ArticleET Quinitio, FD Parado-Estepa & E Coniza -
Philippine Journal of Science, 1991 - Science and Technology Information InstitutePenaeus japonicus nauplii from wild spawners were reared up to the early postlarval stage (PL20) in 12-t concrete tanks. A survival rate of 13-15% was obtained. Hatchery-reared postlarvae were restocked in concrete tanks for grow-out. After six months, survival rate was 49.3% with mean body weight of 20 g and carapace length of 21-33 mm. Ablated and unablated females were stocked together with males at 1:1 sex ratio in broodstock tanks. After three months, 11% of the ablated prawns spawned whereas 1.4% of unablated females spawned after five months. Nauplii from these spawnings were reared up to the adult stage thus completing the life cycle of J. japonicus in captivity.