TAILIEUCHUNG - Optimization of nile tilapia (Oreochromis niloticus) production in ponds based on improved farm management practices in Rwanda

The purpose of this study was to optimize the Nile tilapia production in ponds based on improved farm management practices in Rwanda. An experiment was carried out at Kigembe National Fish Centre in Rwanda whereby six ponds of 53 m2 of surface area, depth of m at inlet and at the outlet each were prepared and stocked with all males Nile tilapia fingerlings of an average weight of 10g | Journal of Fisheries science and Technology - 2016 OPTIMIZATION OF NILE TILAPIA (OREOCHROMIS NILOTICUS) PRODUCTION IN PONDS BASED ON IMPROVED FARM MANAGEMENT PRACTICES IN RWANDA Ndorimana Jean Claude1, Nguyen Van Tien2, Pham Quoc Hung1 Received: 02/6/2016; Revised: 01/9/2016; Accepted: 26/9/2016 ABSTRACT The purpose of this study was to optimize the Nile tilapia production in ponds based on improved farm management practices in Rwanda. An experiment was carried out at Kigembe National Fish Centre in Rwanda whereby six ponds of 53 m2 of surface area, depth of m at inlet and m at the outlet each were prepared and stocked with all males Nile tilapia fingerlings of an average weight of 10g. Out of nine ponds three treatments (2 fingerlings/m2, 4 fingerlings/m2 and 6 fingerlings/m2) with 2 replicates each were set up. The key variables to gauge were survival, growth rate and feed conversion ratio (FCR) through an improved farm management practices including good feeding, good fertilisation, controls of predators and water quality. The study was conducted for a period of 4 months (15th January-15th May 2014). The data were analysed using SPSS software. The results showed that the survival rate (SR) was above 80% and did not significantly differ among treatments (P>). Regarding the SGR and FCR there was a significant difference between the treatment 1 and the remaining treatments 2 and 3. Specifically, fish have grown faster in the treatment 1 and used the supplied feeds more effectively. We compared the obtained production results with the ones registered by farmers and realized that with the improved farm management practices we can expect to attain 4,364 kg/ha/year for the first treatment by which we applied the stocking density with that applied by farmers, while the high production obtained by farmers was 3,500 kg/ha/year. With the adoption of improved farm management practices we managed to increase 864 kg of fish/ha/year. Since the major production cost

• Ngư nghiệp
• Good feeding
• Good fertilization
• Control of predators
• Control of diseases
• Oreochromis niloticus
• Medicated feed
• Oreochromis niloticus (L
• ) juveniles
• Safety and intestinal histology
• Nile tilapia
• Oxytetracycline dosing
• Random amplified polymorphic DNA
• Sex discrimination
• Nile tilapia fish
• Genetical sex
• Different growth performance
• Thua Thien Hue province
• Water parameters
• Economic efficiency
• Acute toxicity
• Histological changes
• Nile tilapia (Oreochromis niloticus)
• Glyphosate herbicide
• Acute toxicity of glyphosate herbicide
• Blood parameters
• Fish physiology
• Oreochromis niloticus L
• Histometric responses
• Spirulina platensis
• Tissue protection
• P53 expression level
• Estimation of P53 level
• Đặc điểm di truyền
• Quần đàn cá rô phi vằn
• Cá rô phi vằn Oreochromis niloticus
• Phân tích chỉ thị microsatellite
• Chỉ thị microsatellite
• Feed efficiency
• Fish meal
• Shrimp head meal
• Emerging animal protein source
• Aeromonas hydrophila
• Bath treatment
• Aeromonas hydrophila infection
• Cá rô phi
• Chế biến bột nêm thực phẩm
• Dịch đạm thủy phân thịt cá rô phi
• Hỗn hợp alcalase và flavourzyme
• Ô nhiễm kim loại nặng
• Biến động năng lượng dự trữ
• Hoạt tính enzyme glutathione S transferase
• Luận văn Thạc sĩ Khoa học
• Enzyme glutathione S transferase
• Cyprinus carpio
• Khoa học Nông nghiệp
• Cá rô phi vằn
• Di truyền cộng gộp
• Ưu thế lai
• Lai hỗn hợp
• Mô bệnh học
• Vi khuẩn Streptococcus sp
• Biến đổi mô bệnh học
• Đặc điểm mô bệnh học
• Comparison of growth
• Water quality
• White leg shrimp
• Litopenaeus vannamei
• Growth performance
• Gut probionts
• Innate immunity
• Challenge test
• Cultured Oreochromis niloticus
• Bacteria culture
• Bacterial diseases control
• Effective antibiotics
• Sensitivity to antibiotics
• Nile tilapia Oreochromis niloticus
• Substrate based biofloc systems
• Hematological parameters
• C/N ratio
• trình bày báo cáo
• cách trình bày báo cáo
• báo cáo nông nghiệp
• kỹ thuật trồng các loại cây
• công nghệ sinh học
• kỹ thuật nuôi cá
• đặc điểm của cá
• các loài cá nước ngọt
• dinh dưởng thủy sản
• tài liệu về nuôi cá
• cách trình bày báo cáo khoa học
• cách viết báo cáo
• báo cáo nghiên cứa đề tài
• báo cáo khoa học
• báo cáo thủy sản
• quy trình sản xuất giống tôm
• Protein level
• Feeding level
• Intensive culture
• Effect of dietary protein levels
• Feeding rates
• nguồn lợi thủy sản
• quản lý thủy sản
• khoa học thủy sản
• nuôi trồng thủy sản
• phòng và trị bệnh
• nghiên cứu giống
• dinh dưỡng thức ăn