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  • freshwater environment  (54)
  • Processing fishery products  (6)
  • Minna (Nigeria)  (42)
  • Zaria (Nigeria)  (12)
  • 2020-2022  (54)
  • 1
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    Effect of Terminalia suparba on fecundity and latency period of Clarias gariepinus broodstocks (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24067 | 19325 | 2018-05-10 10:15:21 | 24067 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study focused on the assessment of Terminalia suparba (bark, leave and root) based diet to improve the ovulation of Clarias gariepinus brood stocks. Ten female and ten male brood stocks were obtained from a reputable fishfarm in Ogun State, Nigeria and were fed with the diets for four weeks before the breeding exercise. The latency period observed in treatments 1 to 4 was 4hours 30minutes while the ovulation period in treatment 5 was 8 hours. There was no significant different (P〉0.05) among the means. The brood stocks in Treatment 2 (Root) has the highest fecundity count (2001) while those in Treatment 5 (control) has the least fecundity count (1496). The phytochemical analysis of the plant materials showed the presence of Alkaloids, Tannin, Phenol, Glycoside, Flavonoids, Steroids, Phlobatannin, Saponin, Anthraquinones. The physical and chemical parameters of water observed showed that dissolved oxygen value ranges from 3.28 -4.60, pH 6.5 - 8.5, temperature 28.0 - 28.8 and conductivity 8.9 - 9.20. It is therefore concluded that the inclusion of Terminalia suparba in the feed of Clarias gariepinus broodstock will not only improve ovulation but also reduce the latency period.
    Description: Includes: 5 tables;Also includes: 11 refs.
    Keywords: Aquaculture ; Chemistry ; Ecology ; Clarias gariepinus ; Nigeria ; broodstocks ; Terminalia specie ; Latency ; fecundity ; Clarias gariepinus ; freshwater environment ; Artificial feeding ; Feeding experiments ; Fecundity ; Brood stocks ; Sublimation heat ; Ovulation ; Physicochemical properties ; Fish culture
    Repository Name: AquaDocs
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  • 2
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    Design and construction of microcontroller-based automatic fish feeding device (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24068 | 19325 | 2018-05-10 10:17:48 | 24068 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This paper presents the design, construction and demonstration of an automatic fish feeder. It is a microcontroller-based system. This system is designed to dispense a predetermined amount of fish feed into an aquarium at a particular time each day. The device consists of a cylindrical can, distributing tubes and a stand. The dispensing of food is controlled by the use of a stepper motor, which is situated under the canister. A timer controlled switch is used to control the time at which the motor rotates, by a program burned into the microcontroller. The fish feeder was successfully fabricated and tested. It dispenses food automatically at set preset times. It is expected that this device will enhance the fish farming efforts of the local farmers, especially the armature farmers who combine fish farming with other businesses.
    Description: Includes: 4 figs.;Also includes: 9 refs.
    Keywords: Aquaculture ; Engineering ; Nigeria ; freshwater environment ; Aquaria ; Fish culture ; Feeding equipment ; Design
    Repository Name: AquaDocs
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  • 3
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    Microbial load on the African catfish (Clarias gariepinus) sold in Markurdi metropolis: a case study of selected markets (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24069 | 19325 | 2018-05-10 10:21:32 | 24069 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The work was carried out using 48 samples of smoke-dried African catfish (Clarias gariepinus). Twelve samples each were obtained from high level market, Wadata market, Wurukum Market and North bank market respectively. Different media (SDA, MSA, EMBA, N.A, MCA), gram reaction and biochemical tests were carried out to confirm the presence of the pathogenic bacteria. There was a strong correlation between the bacterial count and water activity of the fish for all bacterial isolates. The micro-organisms isolated were Aspergilus niger, Mucor spp, Salmonella spp, Escherichia coli and Staphylococcus aureus which were indications of contamination from surrounding environment.
    Description: Includes: 5 tables and 4 figs.;Also includes: 16 refs.
    Keywords: Fisheries ; Health ; Clarias gariepinus ; Nigeria ; African catfish ; Bacterial load ; Makurdi ; Mycoflora ; Smoke-dried fish ; freshwater environment ; Microorganisms ; Cured products ; Fish ; Pathogens ; Biochemical analysis ; Processing fishery products ; Storage life
    Repository Name: AquaDocs
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  • 4
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    Aquaculture and the environment (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24072 | 19325 | 2018-05-12 13:54:51 | 24072 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Aquaculture industry in the last five decades has grown at an unprecedented rate (Average growth of 3.2 percent per year) stimulated by the increased demand for fish and fishery products as global population awareness of fish as a health food increased and the population from capture fisheries becomes almost static. In the light of the noticeable expansion, this review paper focuses on the deleterious effect of many aquaculture practices which includes; degradation of terrestrial environments, pollution from chemical as well as waste and nutrient loading, diseases to mention but a few. Measures are proffered to reduce the negative impact of Aquaculture on the environment. The efforts of the National Environmental Standards and Regulation Enforcement Agencies (NESREA) as it concerns EIA should be broadened to ensure that small aquaculture ventures along the coastline and within inland water bodies be considered to avoid environmental hazards.
    Description: Includes: 2 tables;Also includes: 32 refs.
    Keywords: Aquaculture ; Pollution ; Nigeria ; Aquaculture ; Environment ; Poverty ; EIA ; Food security ; freshwater environment ; Aquaculture ; Aquaculture systems ; Environmental degradation ; Chemical pollution ; Wastes ; Environmental effects ; Environmental legislation ; Environmental assessment ; Food security ; Pollution effects
    Repository Name: AquaDocs
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  • 5
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    Fish: the healthy friendly species (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24070 | 19325 | 2018-05-12 13:51:23 | 24070 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fish is a very important part of a healthy diet. Fish and other seafood are the major sources of healthful long-chain omega-3 fats and they are also rich in other nutrients such as vitamin D and selenium, protein, and low in saturated fat. There is strong evidence that eating fish or taking fish oil is good for the heart and blood vessels. Research over the past few decades has confirmed the importance of the nutritional components of fish in brain development and reproduction and highlighted a role for fish in a variety of other functions in the body. Much of the importance of fish in health has come from research into long chain polyunsaturated fatty acids (PUFA) of the n-3 family. The n-3 Fats are also generally known as omega 3 fats. Fish is a rich source of two important n-3 PUFAs, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DBA). Marine algae are the only form of life that can easily make long chain n-3 PUFA. As fish feed on algae, they become rich sources of these important n-3 fats which in turn transfer to humans through consumption of the former. In addition, fish is also a good source of iodine, zinc vitamins A and some B vitamins. Fish intake has bee on decline for many years based on different food consumption survey with alarming findings that some people never eating fish without any taboo attached. The level of fish intake has been linked with a lower risk of death from heart disease and likewise playing vital roles in preventing other illnesses such as arthritis, strokes, breast cancer, diabetes to mention a few. However, it is recommended by various finding that eating fish at least twice a week and including oil- rich fish at least once a week in diet will maintain healthy conditions against illnesses.
    Description: Includes: 3 tables;Also includes: 50 refs.
    Keywords: Fisheries ; Nigria ; Fish ; Healthy ; Friendly ; Species ; freshwater environment ; Fish ; Fish oils ; Heart ; Nutrition ; Nutritive value ; Vitamins ; Fatty acids ; Heavy metals ; Pollutants
    Repository Name: AquaDocs
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  • 6
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    Aflatoxin levels in fish feeds in Abeokuta, Ogun State (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24071 | 19325 | 2018-05-12 13:53:17 | 24071 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-15
    Description: Post harvest contamination can occur if drying of feed is delayed and when water is allowed to exceed critical values for mould to grow during storage. This study examined the aflatoxin levels in fish feeds surveyed in Abeokuta, Ogun State, Nigeria. Fifteen (15) fish farms were randomly selected for assessment of the aflatoxin levels in fish feeds in Abeokuta. After the estimation of the aflatoxin levels using Veratox quantitative aflatoxin test, the Aflatoxin concentrations in the samples ranged between 0-49 ppb with a mean value of 6.89 ppb. Results obtained from this study showed that aflatoxins were found to be associated with fish feeds in different fish farms in Abeokuta, but, a very high proportion of the feed samples were below the regulatory levels (maximum of 20 ppb) that may not be toxic to the health of the fish according to the regulatory levels for aflatoxins issued by the Food and Administration of the United States. Thus, feeds fed to the cultured fish species in farms in Abeokuta were fit for consumption, with very little or no threat of aflatoxicosis (a disease that can affect many species of fish, when feed contaminated with aflatoxin is consumed).
    Description: Includes: 1 table and 1 figure;Also includes: 13 refs.
    Keywords: Aquaculture ; Conservation ; Nigeria ; Fsh feeds ; Aflotoxin ; Aflotoxicosis ; Aspergillus species ; Aflotoxin in fish feeds ; freshwater environment ; Feed ; Pollution ; Storage ; Storage effects ; Biological poisons ; Fish
    Repository Name: AquaDocs
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  • 7
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    Assessment of smoked fish packaging in Doron-Baga metropolis, Borno State, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24074 | 19325 | 2018-05-12 13:59:45 | 24074 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-15
    Description: This study examined how smoked fish are being packaged in Doran-Baga metropolis. A random sampling technique was used purposely to select one hundred and fifty respondents who are currently involve in smoked fish packaging. Data were collected by means of structured questionnaire. Data collected were analyzed using percentages and frequency. Results revealed that smoked fish packaging is predominantly traditional in the study area. Modern method of smoked fish packaging is nearly absent when compared to smoked fisheries resources produced and packaged from the area
    Description: Includes: 3 tables;Also includes: 8 refs.
    Keywords: Fisheries ; Management ; Nigeria ; Borno ; Chad L. ; freshwater environment ; Cured products ; Packing fishery products ; Evaluation ; Processing fishery products ; Packing materials
    Repository Name: AquaDocs
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  • 8
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    Assessment of the adoption of aquaculture technologies in Niger State, North Central Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24075 | 19325 | 2018-05-12 14:01:24 | 24075 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-15
    Description: A total of 115 respondents were examined through purposive and cross sectional approach using questionnaire in nine Local Government Areas of the state. About 58% of the respondents were small scale fish farmers with annual income from fish farming being in a range of N151,00O0 to N200,000 per annum. Majority of the respondents fell within the age of 31-50 years, civil servants by occupation and mostly having tertiary education. The respondents generally had positive attitude to fish farming with comparatively high rate of awareness in relation to adoption of 14 aquaculture practices under investigation in this study. Inadequate extension education, water scarcity and costly and unaffordable fish feeds were observed as major threats to fish farming in the study area.
    Description: Includes: 4 tables;Also includes: 12 refs.
    Keywords: Aquaculture ; Management ; Aquaculture ; Technologies ; Fish farmers ; Awareness ; Adoption ; Civil servants ; freshwater environment ; Aquaculture ; Extension activities ; Technology transfer ; Fishery economics ; Economic benefits ; Aquaculture economics
    Repository Name: AquaDocs
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  • 9
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    Comparative assessment of fermented maize broth and cassava waste water on the growth performance of catfish (Clarias gariepinus) fry (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24078 | 19325 | 2018-05-12 14:08:28 | 24078 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study was conducted to evaluate and compare the growth performance of catfish fry on fermented maize broth and cassava waste water. Four day old fry (weight range 0.002 - 0.003g) of C. gariepinus were acclimatized in 10 litres glass tank of water for 5 days in Aquaculture Department of Nigerian Institute for Oceanography and Marine Research, Victoria Island, Lagos. Shell free artemia was mixed with Fermented Maize Both (FMB), Fermented Cassava Waste water (FWC) and bore hole water (control) respectively. The artemia mixtures were allowed to air-dry before administration. The treatments were produced in triplicates, feeding, ad-libitium for 30 days. The fry were fed with the treated shell free artemia and weighed every 6 days. The results revealed that fry fed fermented cassava waste water [FCW] diet showed highest mean weight, daily growth rate [DGR], survival rate and specific growth rate [SGR] and lowest food conversion ratio (FCR). This was followed by fermented maize broth while fish fed artemia mixed with borehole water-had the least growth. The results suggest that addition of fermented cassava waste water to shell free artemia can enhance fish growth in catfish hatchery production.
    Description: Includes: 1 table and 1 figure;Also includes: 13 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Lagos ; Growth performance ; Fermented cassava waste water (FCW) ; Maize broth (FMB) ; freshwater environment ; Feeding experiments ; Fish culture ; Growth rate ; Fish ; Fry ; Feed ; Nutrients (mineral) ; Waste water ; Comparative studies ; Fermentation ; Length-weight relationships
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  • 10
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    Growth performance and feed utilization of Clarias gariepinus (Teugels) fed different dietary levels of soaked Bauhinia monandra (Kutz) seed meal (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24076 | 19325 | 2018-05-12 14:04:20 | 24076 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study was conducted to evaluate the suitability of soaked Bauhinia monandra (Kutz) seed as alternative protein source for Clarias gariepinus and to determine cost of feed compounded. The proximate analysis of the diet and carcass composition of fish (crude protein, crude fibre, ash, moisture content and lipid were determined using AOAC (1980). Data for each parameter were subjected to analysis of variance (ANOVA) while means of various results were compared at 5% level of significance. A preliminary study was conducted to determine the best processing method that reduced anti-nutrients to the minimum level without impairing nutrients composition. Boiled, toasted and soaked seeds were used. Bauhinia seeds soaked for 96 hours had least concentration of anti-nutrients. The experimental diets was formulated to contain soaked Bauhinia seed meal (SBSM) at levels of 25%, 50% and 75% inclusion (Diets 2, 3 and 4 respectively) with two diets acting as control (Diets 1 and 5). All diets were isonitrogenous (40% crude protein) and isocaloric (3212kcal/kg). A 12 weeks feeding trial was conducted in juveniles which were randomly distributed into 24 improvised non-recirculatory and semi-flow through indoor plastic tanks (52cm X 34cm X 33. 5cm) at a stocking rate of 10 fish per tank and three (3) replicates per treatment. The experimental design was complete randomized. The fish were fed at 5% body weight, twice daily. Diets with higher inclusion levels of SBSM (diets 3 and 4) significantly depressed growth formance of fish. The variations observed in the SGR, FCR, FER and PER were associated with the anti-nutrients present in the diets, these parameters reduced with increasing levels of SBSM in the diets of fish. Based on the relative cost of diets per unit eight gain and protein gain, diet 2 (25% SBSM) was most economical. The results suggested that SBSM can be used to substitute up to 25% levels of dietary protein in C. gariepinus juveniles without significant reduction in growth.
    Description: Includes: 4 tables;Also includes: 23 refs.
    Keywords: Ecology ; Aquaculture ; Nigeria ; Katsina State ; Growth ; Feed utilization ; i Clarias gariepinus/i ; freshwater environment ; Fish ; Feeding ; Utilization ; Diets ; Feeding experiments ; Carcasses ; Growth rate
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