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  • 1
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    Length-weight relationship and condition factor of Citharinus citharus (Geoffroy Saint-Hilaire, 1809) from Lake Akata, Benue State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24247 | 19325 | 2018-05-20 05:46:20 | 24247 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The Length-weight relationship and changes in the condition factor of Citharinus citharus of the Lake Akata, an ox-bow Lake of River Katsina-Ala, a tributary of River Benue was studied. A total of five hundred and five (505) fish samples were collected from May 2008-April 2009. Length-weight relationship of fish was estimated from the equation: W = a.Lb which was transformed to base 10 logarithm, and condition factor (k) was determined using the equation: K=100W/L3. Both sexes of C. citharus in Lake Akata exhibited negative allometric growth pattern. The combined length weight relationship of C. citharus sexes was LogW = - 1.7738 + 2.9044 LogL (r2 = 0.9527). The coefficient of determination for the Length-Weight relationship for both sexes of C. citharus in Lake Akata was strongly positive. The mean condition factor for the combined sexes was 1.37 ~c 0.02, but individually, female C. citharus were in better condition (1.44 ~c 0.03) compared to the males (1.29 ~c 0.02). The condition factor of C. citharus in dry season (1.37 ~c 0.03) was not significantly higher than that of (1.36 ~c 0.03) in wet season (p〉0.05). This means the fish species are living well in the lake as the 'K' value are greater than one.
    Description: Includes: 25 references.
    Keywords: Ecology ; Fisheries ; Citharinus citharus ; Nigeria ; Akata Lake ; Growth pattern ; Seasonal condition ; Citharinus citharus ; Lake Akata ; freshwater environment ; Length-weight relationships ; Condition factor ; Freshwater fish ; Lake fisheries ; Growth rate
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 374-378
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  • 2
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    Synthesis of climate change effects on water sources for aquaculture (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24592 | 19325 | 2018-05-20 16:08:17 | 24592 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effect of climate change on the aquatic environment has been well documented with results detailing increase in green house gases and global temperature. Water quantity and quality for aquaculture is also affected by this global phenomenon. Increasing global temperatures affects many sectors in an ecosystem. Water use in aquaculture can be in-situ or ex-situ. Groundwater is expected to be recharged if climate change leads to increased rainfall and runoff but empirical evidence suggests otherwise. The sustainability of groundwater for aquaculture is therefore threatened. Increased temperatures of surface waters can affect water quality and suitability for use in aquaculture with attendant biofouling and growth of thermophilic algae. Rainwater is affected by human activities and pollution as well as materials used for its collection. It is usually low in pH and will need to be buffered. The use of water from any source as well as the use of water bodies for aquaculture must be done with regular analysis of parameters since climate change is an ongoing process.
    Description: 34 references.
    Keywords: Atmospheric Sciences ; Aquaculture ; Nigeria ; Groundwater ; Surface water ; Rain water ; Climate change ; Aquaculture ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 104-108
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  • 3
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    Aquaculture business management in Nigeria: issues and considerations - a review (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24587 | 19325 | 2018-05-20 16:01:42 | 24587 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Starting an aquaculture business in Nigeria requires a good understanding of the industry. Small aquaculture ventures cannot compete effectively in the present scenario where large farms are springing up in the urban areas of Nigeria. The export market for aquaculture products has not been fully exploited. The export of smoked fish to the United Kingdom has been ongoing and expanding, but it is meant to serve the African community in the UK. The bane of the aquaculture industry lies in the small nature of most of the enterprises. Nigeria has no specific legislation on aquaculture hence the idea of a National Aquaculture Strategic Initiative is a welcome development.
    Description: Includes: 38 references.
    Keywords: Aquaculture ; Nigeria ; Aquaculture ; Socio-economic ; Legislation ; Enterprise ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 87-91
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  • 4
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    The hydrology of a small fish pond at the University of Agriculture, Makurdi Experimental Fish Farm (2021)
    In:  http://aquaticcommons.org/id/eprint/3665 | 424 | 2011-09-29 17:01:04 | 3665 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-28
    Description: The monthly and seasonal water requirements of a small fish pond (0.068ha; maximum capacity of 613.83m super(3)) at the University of Agriculture, Makurdi Fish Farm (Benue, Nigeria) were determined during the period of February to August 1996. The sources of water for the pond were rainfall, (103.4cm), run-off (6.3cm) and regulated inflow (95.0cm). The water loss for the period were Evapotranspiration, (106.74cm), Seepage (71.64cm) and regulated discharge (25.00cm). Evapotranspiration was identified as the main source of water loss while rainfall was the major source of water gain. The mean monthly water deficit was 24.56~c11.43cm while the mean monthly surplus was 9.84~c8.05cm. The quantity of water required to maintain the optimal water level in the pond was 474.00m super(3). Preliminary water budget of the study area showed that rainfed aquaculture can be effectively carried out at Makurdi during the months of June to October with supplementary inflows during the dry season months
    Keywords: Aquaculture ; Nigeria ; fish ponds ; hatcheries ; hydrology ; water budget ; water quality
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 103-107
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  • 5
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    Effect of locally available spices on the organoleptic and storage periods of Heterotis niloticus (2021)
    In:  http://aquaticcommons.org/id/eprint/3985 | 424 | 2011-09-29 16:35:33 | 3985 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-28
    Description: Investigation were carried out on the effect of some locally available species in the enhancement of the organoleptic quality and the storage periods of smoked Heterotis niloticus using Pprosopis africana as common smoke sources. Samples of fresh H. niloticus were bought, cut into chunks while extract juice from pepper, ginger rhizomes, garlic, onion bulb were used as sources of spices. Samples of fish were divided randomly into five (5) batches dipped into spice extract juices for 10 minutes drained and smoked with common firewood. Treatment without spice extract juice served as control. Each batch of fish was smoked for 7 hours on a drum-made smoking kiln products were individually packaged in polythene bag stored at room temperature and used for sensory evaluation and microbial analysis. Results of the sensory evaluation indicated that there was significant difference (P〈0.005) for taste, appearance, colour and overall acceptance for the treatments. Ginger juice extract had the best overall acceptance. Similarly there was significant difference (P〉0.05) in the microbial analysis. The garlic juice extract had the longest storage period with minimum total plate and mould count after 8 weeks
    Keywords: Fisheries ; Biology ; Nigeria ; Makurdi ; fish storage ; microbiological analysis ; organoleptic properties ; storage effects ; storage life ; taste ; Heterotis niloticus
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 20-24
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  • 6
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    The role of extension in fisheries development among rural communities (2021)
    In:  http://aquaticcommons.org/id/eprint/3721 | 424 | 2011-09-29 16:55:31 | 3721 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-29
    Description: It is a common knowledge that there exists a wide gap between domestic fish production and demand in Nigeria. Government recognizes this situation and has in recent years encouraged fish production through fishing inputs subsidies, DFRRI assisted fingerlings production among others. Despite these efforts, impact at the grassroots has been low. One of the major reasons for the failure could be attributable to inadequate involvement of rural communities in fish production. This missing link appears to be ignorance of local communities in harnessing this potential to stimulate fish production. There is therefore the need to educate the rural dwellers through effective extension services. Strategies to achieve the required awareness have been discussed
    Keywords: Management ; Education ; Nigeria ; technology transfer
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 42-46
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  • 7
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    Growth response of Clarias gariepinus fry to organic and inorganic fertilizers (2021)
    In:  http://aquaticcommons.org/id/eprint/3732 | 424 | 2011-09-29 16:56:14 | 3732 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-29
    Description: The growth response of Clarias gariepinus was investigated in various types of fertilizers. Fertilizer type was found to influence plankton abundance which in turn determine the growth and well being of C. gariepinus. The best weight increase recorded was in cow dung /NPK (1.37~c1.01g) followed by poultry (0.49~c0.31g), NPK/poultry (0.05~c0.25g) and NPK(0.03~c0.57g) The survival rate in these treatments were cow dung/NPK (100%), poultry (100%), NPK/cow/poultry (33%) and NPK (8%)
    Keywords: Aquaculture ; Biology ; Chemistry ; Nigeria ; Lagos ; fish culture ; growth ; inorganic matter ; organic fertilizers ; Clarias gariepinus
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 106-112
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  • 8
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    Growth performance of Clarias gariepinus fingerlings fed earthworm meal (Lumbricus terrestis) (2021)
    In:  http://aquaticcommons.org/id/eprint/4028 | 424 | 2011-09-29 16:39:45 | 4028 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-28
    Description: An investigative study was carried out on the growth performance and nutrient utilization of (Clarias gariepinus) fingerlings fed earthworm meal as a replacement for fish meal. A large collection of earthworm was done during the peak of rainy season (July-August) within the University environment. They were then ovens dried. Used as test ingredients were 0% (Diet 1) 50% (Diet 2) and 1000% (Diet u). The trials were conducted in plastic bowls (40-L capacity) under laboratory conditions. The diets were fed at 5% body weight to fish; the fish were stocked at 10 fish per bowl. The evaluation of the growth parameters showed that there was no significant difference (P〉0.05) in mean weight gain (MWG) specific growth rate (SGR) food conversion ratio (FCR), protein efficiency ration (PER) and survival among the fish fed the experimental diets
    Keywords: Aquaculture ; Biology ; Nigeria ; diets ; feed composition ; feeding experiments ; food conversion ; growth rate ; nutritional requirements proteins ; Clarias anguillaris ; Lumbricus terrestis
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 214-218
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