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  • 1
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    The length-weight relationship and condition factor of Citharinus citharus citharus in Lake Kainji, Nigeria (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23314 | 19325 | 2018-03-30 15:25:47 | 23314 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The length - weight relationship and condition factor of Citharinus citharus citharus was studied for a period of twelve (12) months from Lake Kainji, Nigeria. Nine hundred and eighty nine (989) fish samples (Citharinus citharus citharus) with total length ranging from 100mm to 530mm and weight ranging from 31.00g to 2250.00g were analysed. The results showed that the values of a, b and r were 0.0039, 3.2134 and 0.8997 respectively. The condition factor(K) values varied from 2.9 to 4.5, which means that the growth pattern of the fish is based on the value of 'a'. the fish species are also living well in the Lake as the 'K' are greater than one.
    Description: Includes:- 2 tables.;9 refs.
    Keywords: Ecology ; Fisheries ; Citharinus citharus citharus ; Nigeria ; kainji L. ; freshwater environment ; Condition factor ; Length-weight relationships
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 173-175
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  • 2
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    Development of fish products from small and underutilized tilapia (Oreochromis niloticus) in Kainji Lake area (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23308 | 19325 | 2018-03-30 15:17:55 | 23308 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Fish Protein concentrate (FPC) from small and stunted tilapia (Oreochromis niloticus) which would otherwise have been discarded was used in certain proportion (0%, 10%, 20% and 30%, where the zero percent serves as control) in addition with wheat flour, for the production of chin-chin in order to address the problem of inadequate intake of protein and to determine the acceptable proportion of FPC to wheat flour by consumers. From the organoleptic result, 10% FPC + 90% wheat flour was well accepted by the panel of judges and therefore recommended as this will help to increase the protein intake of consumers.
    Description: Includes:- 2 tables.;9 refs.
    Keywords: Fisheries ; Oreochromis niloticus ; Nigeria ; Kainji L. ; freshwater environment ; Fishery products ; Products ; Fish utilization
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 144-146
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  • 3
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    Hatchability and survival of H. longifilis fertilized at varying latencies (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23307 | 19325 | 2018-03-30 15:16:37 | 23307 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: In determining the optimum latency period of H. longifilis, of which the hatchability and higher Survival percentage were used as a determining factors to determine the optimum latency period of H. longifilis. The result from these varying latencies period shows that the best latency periods at the ambient temperature of 26degreesC, that support mass production and higher survival of H longifilis ranges between 15-19 hours. There was low or zero hatchability from the egg stripped early and the one stripped late.
    Description: Includes:- 1 table.;8 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; Hatching ; Survival ; Breeding ; Induced breeding
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 140-143
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  • 4
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    Indices for organoleptic assessment of fresh fish quality (Tilapia species) (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23312 | 19325 | 2018-03-30 15:22:48 | 23312 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Quality conditions of Tilapias (family Cichidae), a group of highly relished fresh water fish, were assessed using the human senses of touch, smell and sight at ambient temperature. The quality factors observed were body texture, odour, skin condition, gill condition, belly condition and eye shape. Deteriorative changes in the quality factors of the fish were observed and recorded at two hours interval. The observed quality factors deteriorated with time in the course of the study. Tilapia fish exhibited deteriorative changes from six hours of storage at ambient temperature. The fish became spoilt and unacceptable from twelve hours of storage.
    Description: Includes:- 2 tables.;4 refs.
    Keywords: Fisheries ; Tilapia aurea ; Tilapia zillii ; Oreochromis niloticus ; Nigeria ; Erelu L. ; freshwater environment ; Fish storage ; Fish spoilage ; Quality control ; Organoleptic properties ; Odour ; Taste
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 165-167
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  • 5
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    Household demand for fish in urban centres: a case of Ilorin, Kwara State of Nigeria (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23315 | 19325 | 2018-03-30 15:27:07 | 23315 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This paper seeks to analyse the demand for fish in Ilorin with a view to identifying the factors that affect the demand for fish in the area. The study was based on data collected from respondents in five (5) major locations in Ilorin. Both descriptive statistics and multiple regression models were used for socio-economic characteristics of fish consumers demand. The results of this study showed that fish is preferred to any other livestock protein sources and the per capital consumption of fish is 0.53kg per month. Sociological factors, health factors and the household sizes did not play major roles in determining the quality of fish demanded. However, price of a close substitute to fish, income of respondents and distances of household from the fish market were very important factors influencing the quantity of fish demanded. The average distance of fish market from households in the study area is 4.5km. It is therefore recommended that distance of fish farm market point should be established close to household to ensure proper patronage and increased consumption.
    Description: Includes:- 1 table.;1 fig.;5 refs.
    Keywords: Fisheries ; Management ; Nigeria ; Ilorin ; freshwater environment ; Marketing ; Market research ; Pricing
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 176-180
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  • 6
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    Some aspects of the physico-chemical parameters of Kontagora Dam, Niger State Nigeria (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23319 | 19325 | 2018-03-30 15:34:16 | 23319 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The seasonal variations in the physicochemical parameters were studied from January, 2007 to December 2007, in Kontagora Reservoir, Niger State, Nigeria. The physico- chemical parameters were determined bi-monthly , using the following methods , temperature using mercury thermometer in degree centigrade, transparency using Secchi-disc , Pye Unicam model 292 meter used for pH and electrical conductivity. Dissolved oxygen by modified Winklerazide method, water hardness and Phosphate- phosphorus by method of Lind (1979), total alkalinity by standard method described by Boyd(l979) , Nitrate- Nitrogen by Phenoldisulphonic acid method. The rainy season mean values for water temperature, depth, pH, Nitrate-Nitrogen, were significantly (P〈0.05) higher than those for the dry season. However, for transparency, conductivity, dissolved oxygen, hardness, alkalinity, phosphate-phosphorus and total dissolved solid, the dry season mean values were higher than the rainy season mean value. As in most other Africa inland water bodies, there was seasonality in the physicochemical parameters variables. The torrential rains of the dam environment, the characteristics trade winds of the dry season, effect of deforestation, fertilizer application, herbicides, insecticide and other chemical factors might have contributed to the fluctuations of some of the physicochemical parameters detennined in the Reservoir.
    Description: Includes:- 2 tables.;1 fig.;39 refs.
    Keywords: Chemistry ; Nigeria ; Kontagora L. ; freshwater environment ; Physicochemical properties ; Seasonal variations
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 189-195
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  • 7
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    Growth improvement of F1 generation of Clarias gariepinus through selective breeding (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23309 | 19325 | 2018-03-30 15:18:56 | 23309 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Selective breeding studies were carried out in four genetic mating combinations of Clarias gariepinus with the aim of improving its growth performance. F2 intraspecific and backcross were produced using the best male and female of the best genetic mating combination in the F generation in crosses of three wild strains of Clara gariepinus. The highest percentage hatchability (75%) was recorded in female Kainji parental and male Kainji F1. and the least (53.67%) in female and Male Kainji Fl. The cross involving female Kainji F1. and Male Kainji Parental had the best survival (49%) indoor and also best (38.67%) outdoor, while the least (37.67%) was recorded in female Kainji parental and Male Kainji F1 and also gave the least (32.67%) outdoor. The female Kainji F1, and male Kainji parental gave the best growth performance (1.61 g) at 19 days indoor rearing, while female and male Kainji parental gave the least (1.50g). At the end of seven months rearing outdoor, the female Kainji parental and male Kainji F1. gave the best growth performance of(222.49g) and the least (180.66) was recorded in female Kainji F1 and male Kainji parental.
    Description: Includes:- 3 tables.;2 figs.;14 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; Fish genetics ; fish breeding ; freshwater environment ; Genetics ; Breeding ; Fish culture ; Growth rate ; Hybrid culture ; Hybrids
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 147-152
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  • 8
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    Prolonging freshness of tilapia Oreochromis niloticus by evaporative cooling system (ECS) (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23310 | 19325 | 2018-03-30 15:20:08 | 23310 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The principle of Evaporative Cooling System (ECS) was adopted to construct a Wooden Evaporative Coolant Structure (WECS) to prolong the freshness of Tilapia, Oreochromis niloticus. The keeping quality of the two structures was compared with fish kept at ambient using temperature, relative humidity, weight loss and organoleptic indices. Results showed that the Basket ESC and Wooden ECS recorded lower temperatures and higher relative humidity values as compared with the ambient. Tilapia stored at ambient condition recorded significantly higher weight loss (P〉0.05) than those kept in BECS and WECS. Results of sensory evaluation showed that there was a gradual reduction in the organoleptic quality of the fish stored in BECS and WECS. Quality of whole fish by panelist after 8 hours of storage showed that the two ECS models recorded significantly higher (P〈0.05) freshness scores than fish stored at ambient temperature. Fishmongers should adopt this technology (BECS and WECS) as a means of prolonging the freshness of Tilapia Oreochromis niloticus before they are sold to consumers.
    Description: Includes:-6 tables.;2 figs.;9 refs.
    Keywords: Fisheries ; Oreochromis niloticus ; Nigeria ; freshwater environment ; Processing fishery products ; Cooling systems ; Cooling ; Fish spoilage ; Quality ; Acceptability
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 153-158
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  • 9
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    Acute toxicity of galex to Oreochromis niloticus (Trewavas) in Nigeria (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23311 | 19325 | 2018-03-30 15:21:32 | 23311 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The acute toxicity of galex (Metolachlor) to fingerlings of Orechromis niloticus (Trewavas) was determined in 96hour static bioassays. During the assays, opercular ventilation and tail fin movement rates of the fish were determined. Haematological parameters of the blood and histopathology of the gills were observed. The 96hours LC50 of galex to fingerlings of O. niloticus was observed to be 9.30mgL-1~c 1.04. Histopathology of gills of the fish exposed to l100mgL -1, 1200mgL and 13..00mg/L-1 showed a dose-dependent disruption of the architecture of the lamellae and atrophy which led to impairment in oxygen uptake. Other symptoms of toxicosis in exposed fish include haemorrhage of the gills and fins, blood shot eyes of the fish, copious production of mucus on the body and head, agitated swimming, eruption of the ventral side and spilling out of the digestive system of fish, air gulping and death.
    Description: Includes:- 3 tables.;23 refs.
    Keywords: Fisheries ; Pollution ; Oreochromis niloticus ; Nigeria ; Zaria ; Galex ; freshwater environment ; Toxicants ; Toxicity ; Toxicity tests ; Pesticides ; Histopathology ; Haematology ; Biological stress
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 159-164
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  • 10
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    An assessment of the problems of fisheries data collection in Nigeria (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23317 | 19325 | 2018-03-30 15:29:58 | 23317 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This paper reports on a survey, which studied the problems working against fisheries data collection in the country. The purpose of this was to quantify the capacity of the States to effectively collect data needed for planning and development of the fisheries sector and to assess the impact of this on the process of data collection and the quality of the data collected. Four organizational levels of data collection - Enumerator, L.G.A, zone & State - were recognized by the study, but their efficiency is weakened by inadequacies of manpower, budgets & logistics. The magnitudes of these problems vary among the States but their effects are adverse all over. The current efforts of the Federal Department of Fisheries and other stakeholders to strengthen fisheries data collection in the states should be intensified both in magnitude and frequency to be able to achieve adequate capacity for generating adequate data for planning and development of the fisheries sector.
    Description: includes:-4 tables.;4 refs.
    Keywords: Fisheries ; Nigeria ; freshwater environment ; Data collections ; Fishery data ; Catch statistics ; Fishery statistics
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 185-188
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