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  • 21
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    Effects of partial and total replacement of soyabean meal with pigeon pea (Cajanus cajan) as alternative plant protein source in the diet of juvenile African mud catfish (Clarias gariepinus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24160 | 19325 | 2018-05-13 13:07:24 | 24160 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A 56-day feeding trial to investigate the effects of feeding varying levels of substituted Soybeam meal (SBL) with Pigeon pea seed meal (PSM) on the performance and carcass characteristics of Clarias gariepinus was conducted. Five isonitrogenous 40% crude protein diets were formulated where PSM Clarias gariepinus (15.74 ~c 1.22g) stocked at 15 fish/50 litres tanks were fed diets in triplicates twice daily to satiation and weight changes recorded weekly. Fish fed diet with 25% and 100% PSM inclusion gave the highest mean weight gain of 25.47g and 23.34g respectively (P〉0.05). There were no significant difference (P〉0.05) among the weight gain of other treatments. Fish fed diet containing 0% SBM and 100% PSM gave the highest gross food conversion efficiency and percentage weight gain of 43.50g and 12.l8g while fish fed diet containing 50% SBM and 50% PSM had the lowest of 35.67 and 9.99 respectively with no significant changes compared with other treatments. For good growth, fish farmers are advised to consider Pigeon pea seed meal either as a partial (25%) or total replacement (100%) for soybean meal in the diet of Clarias gariepinus juveniles.
    Description: Includes: 5 tables.;Also includes: 19 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Lagos ; Soyameal ; Pigeon pea ; Clarias gariepinus ; Protein source ; freshwater environment ; Diets ; Freshwater fish ; Artificial feeding ; Feeding experiments ; Proteins ; Juveniles ; Feed efficiency ; Growth rate
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
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    Format: 37-40
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  • 22
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    Growth performance and feed utilization of mudfish Heterobranchus longifilis juveniles fed varying dietary protein levels (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24171 | 19325 | 2018-05-13 18:52:27 | 24171 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Mudcatfish (Heterobranchus longifilis) juveniles (body weight 61.60-83.05g, length 204.43 ~c 3.07 - 229.53 ~c 3.65mm) were fed with diet containing crude protein (CP) levels of 30%,35% and 40% for 10 weeks, using fishmeal as a protein source. Growth performance and feed utilization were investigated. Fish were raised in plastic aquaria of dimension 46 x 38 x 28cm3 at a temperature range of 26.0-29.0~'C, pH value of 6.6-7.4 and dissolved oxygen of 3.5-5.1 mg/1. The highest increase in body weight (23.30 ~c 4.30g) and specific growth rate (0.68 ~c 0.02% day-1) were achieved with Diet 2 (35%CP). The condition factor ranged 0.60 ~c 0.009- 0.66 ~c 0.005 and fish survival was 100% for all diets. Protein efficiency ratio (2.37 ~c 0.35) was also significantly better with 35% CP (p〈0.001). Diets 1(30% CP) and 2 (40% CP) gave lower performances. The observations in this study suggest that a 35% high quality protein diet will probably provide the needed protein requirement for H.longifilis juveniles.
    Description: Includes: 3 tables.;Also includes: 13 references.
    Keywords: Aquaculture ; Ecology ; Heterobranchus longifilis ; Nigeria ; Bayelsa ; Heterobranchus longifilis ; juveniles ; Protein ; Feed utilization ; freshwater environment ; Growth rate ; Feed ; Utilization ; Freshwater fish ; Juveniles ; Diets ; Proteins ; Fish meal ; Condition factor ; Survival ; Feeding experiments ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 80-82
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  • 23
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    Effect of using plant - Rosa-sinensis' extracts and Methyltestosterone in a fry diet for Oreochromis niloticus (L.)'s growth, survival and sex ratio (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23240 | 19325 | 2018-03-18 15:22:14 | 23240 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The effectiveness of plant extracts (PE) and Methyltestosterone (MI) for male production and growth promotion in Oreochromis niloticus were studied in concrete tanks for 60 days. Fry were fed at two feeding levels, initially 20% and later 10% of body weight dally with diet treated with 60mg/kg. Tilapia treated with MT for 60 days attained an average weight of 10.13~c1.32g, those treated with PE attained an average weight of 11.15~c0.55g compared to 6.95~c0.32g for untreated (control) fish reared under similar conditions. The percentage of males among the untreated tilapia was 39.28%, 68.75% for PE fed tilapia, more than 88.88% of the tilapia in MT treatment group were male. The experiments demonstrated that the anabolic and sex reversal effects of MT on tilapia are proportional to the duration of treatment and quantity of hormone administered Histological sections of the testes of fry fed MT and P E diets showed deformed, clustered, swollen nuclei. Higher concentrations of MT and PE can be used to control prolific breeding and increase yield in fish production.
    Description: Includes:- 4 tables.;2 figs.;11 plates.;20 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; Rosa-sinensis ; Methyltestosterone ; freshwater environment ; Feeding experiments ; Fish culture ; Diets ; Aquatic plants ; Histology
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 190 - 198
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  • 24
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    Influence of dietary palm oil on growth and carcass composition of Heterobranchus longifilis (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23250 | 19325 | 2018-03-25 14:30:49 | 23250 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Supplies of marine fish oil (FO) are limited and continued growth in aquaculture production dictates that substitutes must be found that do not compromise fish health and growth. This study investigated the suitability of palm oil (PO) as a replacement for FO (cod liver oil) in diets of H longifilis. Triplicate groups of H longifilis fingerlings were fed five practical-type diets in which the added lipid was either 100% FO and 0% PO; 75% FO and 25% PO; 50% FO and 50% PO; 25% FO and 75% PO; or 0% FO and 100% PO for 8 weeks. There were no significant effects of diet on growth rate or feed conversion ratio. Lipid deposition was highest in the liver of fish fed 100% PO. No significant differences were observed between dietary treatments for moisture, protein and ash content in H. longifilis fingerlings. This study suggests that PO can be used successfully as a substitute for cod liver oil in diets for H. longifilis.
    Description: Includes:- 3 tables.;24 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; freshwater environment ; Diets ; Nutritional requirements ; Nutritive value ; Growth rate ; Feeding experiments ; Experimental culture ; Fish culture ; Carcasses
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 250 - 254
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  • 25
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    A prelimnary study of diet in the juvenile gorean snapper, Lutjanus goreensis (Valenciennes, 1830) from Five Cowrie Creek, Lagos, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23453 | 19325 | 2018-05-04 17:40:12 | 23453 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Diet of the juvenile Gorean snapper, Lutjanus goreensis from Five Cowrie Creek was investigated between April 2008 and January 2009. Analyses of 184 specimens by numerical (NO), frequency of occurrence (FO) and geometric index of importance (GII) methods, respectively revealed a moderately high proportion (47.83%) of stomachs with food or prey. Shrimps and crabs constituted more than 80 % of total prey items. Other dietary components included lobsters, stomatopods, whole fish and fish parts. Similarly, analysis of diet composition by size - groups also indicated a predominance of the shrimps and crabs over all other prey items. In conclusion, L. goreensis can be described as a top-level carnivore feeding almost exclusively on epibenthic crustaceans in the juvenile stage.
    Description: Includes:- 2 tables.;21 refs.
    Keywords: Ecology ; Fisheries ; Lutjanus goreensis ; Nigeria ; Lagos Greek ; brackishwater environment ; Diets ; Stomach content ; Feeding behaviour
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 232-236
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  • 26
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    Effect of replacing maize with cocoa pod husk in the nutrition of Oreochromis niloticus (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23500 | 19325 | 2018-05-07 12:21:15 | 23500 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The study was carried out to evaluate the potential of cocoa pod husk CPH as a replacement for maize in the diet of Oreochromis niloticus (tilapia). Triplicated groups of 20 fish per plastic tank (replicate) with average weight of 0.9~c2g per fish were randomly allocated into 5 groups in a completely randomized design in an 8-week, trial. The treatment included the control diet (Diet E) having maize as the only major energy source and diet A in which maize was completely replaced with cocoa pod Husk, also Diets B, C, D contained different proportions of maize and cocoa pod husk which ranged from 10-30 in percentage. Result revealed that 100% maize substitution with CPH had no significant effect on survival, weight gain and feed conversion ratio at reduced cost. The study suggests that CPH could suitably substitute up to 100% maize in the diet of Oreochromis niloticus with an irresistible increase in profit margin.
    Description: Includes:- 5 tables.;27 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; freshwater environment ; Feeding experiments ; Experimental culture ; Diets ; Feed efficiency ; Nutritional requirements
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 504-511
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  • 27
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    Performance of Heterobranchus longifilis fingerlings fed maggot meal-based diets in miniflow through system (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23020 | 19325 | 2018-03-05 20:30:27 | 23020 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The growth response, nutrient utilization, cost benefits and haematological responses of two hundred and fifty (250) Heterobranchus longifilis fingerlings fed maggot meal based diets were evaluated for 70 days in mini flow through system. Twenty fingerlings were stocked in triplicate in fifteen mini flow through system of plastic tanks of fifty (50) litres capacity and coded MM1 - MM5 in relation to their diet name. Five isonitrogenous (40.0%) and caloric content (2017.S 2092.3kJ/100g) maggot meal based diets namely MM1 O%maggot meal, MM2 25% maggot meal, MM3 -50% maggot meal, MM4- 75% maggot meal and MM5- 100% maggot meal were used for the experiment. The higher the proportion of maggot in the meal, the higher the ether extract and crude fibre. No significant difference (p〉0.05) existed between ash content of the experimental diets. Diet MM2 had the best growth performance and highest MGR with a significant difference (p〈0.05) with other diets fed fish. No significant differences (p〉0.05) existed between the growth parameters for diets MM1 MM3 and MM4 A positive correlation (r = 1.0) existed (p〈0.05, 0.25) between the growth parameters for the different experimental diets. Highest correlation (r =0.9981) existed p〈0.05 between MGR within the treatments. Highest Haematocrit (23%) Haemoglobin content (7.68g/dl) and whole blood clotting time (46 see) were recorded from H. longifilis fed MM5. Without any reservation, inclusion of maggot based meal diet is recommended as feed in the diet of H. longifilis to 75% replacement of fish meal for growth and better healthy condition so as to ensure sustainable aquaculture in Nigeria.
    Description: Includes:- 3 tables.;1 fig.;26 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; Maggot meal ; freshwater environment ; Fish culture ; Food organisms ; Diets ; Feed efficiency ; Growth rate ; Haemoglobins
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 216 - 223
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  • 28
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    Comparative effect of alternative feed materials with Artemia in the diet of Clarias gariepinus larvae (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23035 | 19325 | 2018-03-05 09:15:11 | 23035 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: A 35-day feeding trial was conducted to compare and evaluate nine first feeds for Clarias gariepinus. The nine feedingstuff materials contained more than 40% crude protein. Artemia, coppens and fishmeal were used as single protein sources. Fish egg meal, cattle liver meal and shrimp meal were supplemented with yeast alone or yeast combined with folic acid. Twenty fish larvae were kept in plastic bowls with replicate for each treatment inside the laboratory. Feeding commenced after yolk absorption. Each diet was fed to fry twice daily to apparent satiation. Percentage survival at the end of the experimental period ranged between 0% and 100% for fish on fish egg supplemented with yeast and folic acid and liver meal with yeast respectively. Fish fed artemia had the highest weight while those on shrimp meal supplemented with yeast had the least. Highest specific growth rate was in fish fed fish egg supplemented with both folic acid and yeast. The cost of rearing Clarias gariepinus larvae can be appreciably reduced by using non conventional protein sources, which are locally available, for feed preparation.
    Description: Includes:- 4 tables.;1 fig.;14 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Feeding experiments ; Feed efficiency ; Diets ; Food organisms
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 263 - 269
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  • 29
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    Flotation, growth, food utilization and economic evaluation of Oreochromis niloticus fingerlings on Lemna paucicostata diets (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23234 | 19325 | 2018-03-18 15:09:44 | 23234 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The inquisition into feed flotation has led to the bio-chemical combination of some conventional feedstuffs with Duckweed Lemna Paucicostata meal fixed at 0, 4, and 8 percent in iso-nitrogenous 30% crude protein, iso-caloric 37 kcal/g diets for Oreochromis niloticus fingerlings mean weight ranged 21.00 21.50g in a fifty-six day feeding trial. Significant (P〈0. 05) feed flotation were obtained at 4 and 8% over 0% Lemna inclusion. There were no significant differences (p〉 0.05) in growth food utilization and survival of fish in all diets. The Cost evaluation and Feed Conversion Efficiency were positive in 8% Lemna diet than the whole artificial feed. However, because of the positive imparts on tilapia culture, Duckweed meal was recommended up to 8% inclusions in diets for tilapia fingerlings.
    Description: Includes:- 3 tables.;2 figs.;24 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Lemna paucicostata ; Nigeria ; New Bussa ; Floating feeds ; freshwater environment ; Feeding experiments ; Feed composition ; Feed efficiency ; Nutritional requirements ; Fish culture ; Diets
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 140-147
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  • 30
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    Production of all male fingerlings through feeding of androgenic steroid (Mesterolone) in the diet fed as first food to tilapia Oreochromis niloticus (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23252 | 19325 | 2018-03-25 14:35:14 | 23252 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Non-conventional hormone, Androgenic Steroid (mesterolone) was prepared and incorporated (using ethanol) at various concentration of 0mg, 30mg, 40mg, 50mg, 60mg each in 0.2kg of fish meal. The six levels were replicated 3 times in plastic tanks. The fish meal incorporated with hormone (mesterolone) were fed as first food to 7 -day old fry of Oreochromis niloticus for 28 days after which the tilapia fry were fed on ordinary fishmeal for another 8 weeks. At the 9th and 12th weeks and after feeding with the hormone, the number of survivals and the weights gained were recorded! After the 12week, the males and females were separated using hand-magnifying lens. The economic viability of all male production using non-conventional hormone (mesterolone) was calculated. Hormone fed to O. niloticus was found to have no significant effect (P〉0. 05) on the survival and the mean weight gain of the O. niloticus. But the hormone fed had great influence on the female: male ratio i.e. treatment difference was highly significant (P〈0.01). Tilapia fry fed with 40mg/0.2kg feed was found to have the largest percentage of males 97% while those fed with 30mg/0.2kg, 50mg/0.2kg, 60mg/0.2kg and 70mg/0.2kg had 51%,91%,86%,89%, and 80% males respectively.
    Description: Includes:- 3 tables.;1 Fig.;15 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; Ibadan ; freshwater environment ; Breeding ; Fish culture ; Sex hormones ; Diets ; Sex ratio ; Sex reversal
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 258 - 263
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