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| Registros recuperados: 33 | |
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| Ayinla, O.A.; Akande, G.R.. |
| The feeding trial of C. gariepinus using three silage based diets and one fish meal based diet was carried out in concrete tanks. The four experimental diets were fed to C. gariepinus fry of relatively the same size. At the end of 8 weeks feeding trial the fish increased from their initial body weight of 0.2g, 0.4g, 0.4g and 0.4g to average final weights of 21.2g 15.4g, 12.8g and 13.8g respectively. The diet containing 41.1% resulted in the least food conversion efficiency of 1.2 over the eight weeks period. Of the experimental treatments the diets containing the highest level of fish silage (41.0%) performed better than any of the other two treatments of 19.0% and 33.5% fish silage contents. Apart from the nutritional superiority of 14% fish meal-based... |
| Tipo: Report |
Palavras-chave: Aquaculture development. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/2484 |
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| Igbinosun, J.E.; Talabi, S.O.; Roberts, O.O.; Okolie, E.. |
| The nutritional effects of the complete or partial replacement of fishmeal by Soyabean meal in the diets of catfish were investigated. Four diets A, B, C, and D in which 34% of fish meal was replaced weight by weight with 0%, 10%, 20% and 34% of Soya-bean meal respectively were fed to four groups of brackish water catfish for six weeks. Results showed that although the digestibilities of proteins were almost equal in all the four groups, the groups fed diet D in which 100% of the fishmeal had been replaced by Soyabean had the least growth as compared to A, B and C. Nevertheless, the group fed diet D (with the least growth) had an economy of gain twice that of the group fed diet A. The liver and heart indices and the proximate compositions of the muscle... |
| Tipo: Working Paper |
Palavras-chave: Brackishwater aquaculture; Aquaculture development. |
| Ano: 1982 |
URL: http://hdl.handle.net/1834/2322 |
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| Ayinla, O.A.. |
| Chemical composition of Clarias gariepinus collected from the wild was investigated. The moisture level ranged from 72.2% to 75.7% while the crude protein level was 18.9% to 19.7%.with the mean of 19.3%. The lipid content ranged from 1.04% to 1.32% (wet weight) while ash was 3.05% to 3.7%. The size of the fish did not significantly (p<0.05) affect the proximate composition. The amino acid pattern of different sizes of C. gariepins were similar with lysine level of 7.5 to 8.0g/16gN,and methionine level of 1.56 to 3.08g/16gN. PUFA of C. gariepinus ranged from 6.5to 7.8%. |
| Tipo: Report |
Palavras-chave: Aquaculture development. |
| Ano: 1993 |
URL: http://hdl.handle.net/1834/2383 |
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| Awa, J.N.; Anyanwu, P.E.. |
| Fish samples were collected from Lekki and Badagry lagoon and the Institute’s experimental fish farm, Lagos, from February 1983 to September 1984. Three thousand seven hundred and eighty six brooders and fingerlings rAnging between 3.5cm and 50.2cm in total length and weighing between 2.56g and 976,0g were examined. External parasites observed on Saratherodon galilaeus included monogenean trematodes, Gyrodactylus spp and Dactylogyrus spp; copepod, Argulus spp, and annelid (Piscilid) leeches on the body surface and gills. T. guineensis were infected by endoparasitic digenean trematodes and nematodes in the alimentary tract. Clarius gariepinus and Chrysichthys nigrodigitatus were infected with cestodes and nematodes. Infection was very high between... |
| Tipo: Report |
Palavras-chave: Aquaculture development; Fish farms. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/1264 |
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| Isla Molleda, M.; Arencibia Carballo, G.; Delgado Miranda, G.; Tizol Correa, R.. |
| La selección de zonas de la plataforma cubana que reúnan las condiciones medioambientales adecuadas para el desarrollo del maricultivo de especies foráneas en jaulas, es una estrategia que se está llevando a cabo por el Ministerio de la Industria Pesquera desde 1996. Hasta la fecha se han seleccionado y autorizado cuatro zonas de la plataforma cubana para la realización de esta actividad en el país, tales son Bahía de Cabañas, Cabo Cruz y Niquero, para el cultivo de dorada (Sparus aurata) y Arroyos de Mantua para el cultivo de lubina (Dicentrarchus labrax). Estas especies son consideradas de alto valor comercial fundamentalmente en países del área mediterránea y su cultivo y comercialización constituyen una fuente de ingresos al país. En... |
| Tipo: Working Paper |
Palavras-chave: Aquaculture development; Coastal zone management. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/4516 |
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| Isla Molleda, M.. |
| Se aborda la problemática del impacto ambiental del cultivo de camarón en Cuba y la necesidad de encaminar los planes de desarrollo futuro hacia una acuicultura sostenible; la interacción de la actividad camaronera con otras actividades económicas que se desarrollan en la zona costera, y los conflictos sociales que se derivan de la misma, tomando como estudio de caso a la camaronera CALISUR, considerada la mayor granja del país, con 960 ha de estanques de cultivo, ubicada en una región de la cuenca del Cauto de gran importancia económica y social, la zona costera sur central del golfo de Guacanayabo. El estudio comprende la evaluación de la calidad del agua y de los sedimentos de las principales fuentes de abasto de la camaronera CALISUR y la zona costera... |
| Tipo: Theses and Dissertations |
Palavras-chave: Aquaculture development; Shrimp culture. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1521 |
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| Marioghae, I.E.; Ayinla, O.A.. |
| Macrobrachium vollenhovenii and Macrobrachion, the two largest Macrobrachium species in Nigeria waters attain maximum adult sizes of 19cm and 13.5cm respectively. Male - female ration is approximately 1.1 for both species. Male dimorphism has been observed in M. macrobrachion but not in M. vollenhovenii. Both prawns breed throughout the year (usually in the brackish waters) with peaks in the rainy season. Although berried females of M. vollenhovenii occur in landlocked water bodies, rearing the larvae has so far been successful in brackish water. Bi-weekly spawning peaks occur in M. macrobrachion but are still to be verified for M. vollenhovenii. Induced spawning has been successful carried out for M. vollenhovenii by using a combination of pituitary... |
| Tipo: Report |
Palavras-chave: Shrimp culture; Aquaculture development. |
| Ano: 1995 |
URL: http://hdl.handle.net/1834/2443 |
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| Dublin-Green, C.O.; Ojanuga, A. G.. |
| Actual and potential acid sulfate soils cover over 750,000 ha. of unclassified wetlands in the mangrove swamp of the Niger Delta. This belt serves many functions including aquaculture development. Presently a number of brackish water aquaculture projects are sited on these soils. In acid sulfate soils, an acidic condition usually develops due to oxidation of the sulfidic materials (e.g. Iron Sulfides) in the soils. Elements such as iron and aluminum are released to pond water in large quantities, while essential nutrients like phosphorus and nitrogen become fixed in the soil and thus are unavailable to the larger community. Acid sulfate soils pose a range of problems for brackish water aquaculture- including, slow fish growth, low fish yields and mass... |
| Tipo: Report |
Palavras-chave: Aquaculture development; Brackishwater aquaculture. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/2391 |
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| Ayinla, O.A.; Nwadukwe, F.O.. |
| The effect of season on the controlled propagation of C. gariepinus was investigated. The hypophysation of C. gariepinus using the pituitary extract from the sacrificed C. gariepinus was carried out from July, 1987 to June 1988. The female broodstock weight ranged from 0.50kg while the male weight, from 0.5kg to 0.6kg. The condition factor of the female broodfish was more or less uniform (1.3 to 1.7). The results showed that there was peak production of eggs by the female during the rainy season. Eggs production for rainy season ranged from 28,000 eggs/kg body weight in June to 37,600 eggs/kg body weight in August. The percentage hatching of the fertilized eggs was also higher in the rainy season than the dry season. The highest hatching of the... |
| Tipo: Report |
Palavras-chave: Aquaculture techniques; Aquaculture development; Aquaculture techniques; Http://aims.fao.org/aos/agrovoc/c_28992. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/2436 |
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| Igbinosun, J.E.; Talabi, S.O.. |
| Four groups of brackish water catfish were fed four diets: N. F. (NIOMR formula 1 feed). A. B. and C. for seven weeks. Feeds N.F., A., B. and C. contained 1.21% fish oil + 5.59% vegetable oil; 1.21% fish oil + 7.39% vegetable oil; 1.21% fish oil + 9.09% vegetable oil; 1.21% fish oil +10.89% vegetable oil respectively. The total amounts of vegetable oil in A., B. and C. included the supplementation of the residual oil in the ingredients with 2%, 4% and 6% respectively with ordinary cooking mixed vegetable oil. Results of feeding trial showed that growth was best in the group led diets containing 10.89% vegetable oil and least in those containing 9.09% vegetable oil. There seemed to have been a positive correlation between growth rate and hepatic... |
| Tipo: Working Paper |
Palavras-chave: Aquaculture development; Brackishwater aquaculture. |
| Ano: 1982 |
URL: http://hdl.handle.net/1834/2323 |
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| Registros recuperados: 33 | |
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