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Ifejika P.I.,National Institute for Freshwater Fisheries Research
Journal of Home Economics Research | Year: 2011

The study determined reproductive women knowledge on nutritive value of fish around Kanji Lake basin, Nigeria. From 189 population of reproductive women, 103 were randomly selected during their pre and post natal visits in the hospital as respondents for the study. Data was collected with semi-structured interview schedule through face to face interview between April and June, 2007. Percentage, mean, frequencies and chi-square were used to analyse the data. Result revealed that most of the reproductive women are economically viable, young and married with an average of 29 years and 3 children. Women dominate decisions on family food meal planning but invest less in food. Reproductive women have high knowledge of fish as a source of protein but were found to be low on medicinal value, vitamins, iodine, calcium, iron, digestible fat and brain development. Determinants of reproductive women knowledge on fish nutrients are education, religion and age. As such, fish utilization to improve nutrition among reproductive women is weakened by low knowledge, occupation and low investment in fish food. Opportunities to increase reproductive women knowledge of fish nutrient and fish food intake are extension education through sensitization and training using religious groups. As such, government agencies operating in the area should invest on food campaign programmes as a social responsibility to reduce malnutrition, improve health and quality of life among reproductive women and children.


Uka U.N.,National Institute for Freshwater Fisheries Research | Chukwuka K.S.,University of Ibadan
Journal of Fisheries and Aquatic Science | Year: 2011

Aquatic macrophytes are basically seen as those plants that complete their life cycle in water and cause harm to the aquatic environment. The attention of fishery managers is always towards the eradication of aquatic macrophytes. This study is therefore timely as it reflects on the economic importance of aquatic macrophytes in aquatic ecosystem and therefore recommends a study on the utility value of aquatic macrophytes of ecological importance. The monitoring of colonized rivers and large water bodies by aquatic plant is necessary for proper management and development of colonization model is hereby advocated. © 2011 Academic Journals Inc.


Ataguba G.A.,University of Nigeria | Olowosegun O.M.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2012

Wcrofinance refers to loans, savings, insurance, transfer services and other financial products targeted at low-income people. Artisanal fishing is a crucial source of livelihoods in developing nations, particularly for low-income families in rural areas where job options are limited. Nigeria depends heavily on revenues from natural resources, especially oil hence income from fishing is particularly important to Nigeria. Aquaculture is also being practiced with a growth rate that has increased over the years. Sources of funding for the operators of these sectors of the economy who are mostly poor peasants will ensure sustainable production and income generation. Informal microfinance groups have existed before the advent of formal microfinance. Microfinance institutions in Nigeria operate in an environment that is dominated by commercial banks. However, their high deposit rate makes them attractive to the low income group. This paper examines the emergence of microfinance institutions, their contributions to fisheries and aquaculture and constraints to be overcome to enable them serve the fisheries and aquaculture sector better. © 2013 Academic Journals Inc.


Ovie S.O.,National Institute for Freshwater Fisheries Research | Eze S.S.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2012

Atya crassa like its relative Macrobrachium species can be a source of foreign exchange for Nigeria. The Atya crassa was cultured in indoor and outdoor rearing systems to investigate the possibility of its growth and production in captivity.A. crassa of sizes ranging 7.05+0.13-8.5+0.05 g were purchased from fishermen around the Jebba Lake. They were transported in open Jerry cans in a cold van for about 2 h. The indoor tanks measured 3 x 2 x 1m. 5 and were stocked 17 prawns per tank while the outdoor tanks were 2 x 2 x 1m. 5an d stocked 10 prawns per tank. The experimental hets were formulated with crude protein levels 30, 35 and 40%. Each diet was assigned to two tanks each indoors and outdoors. They were fed twice daily (9 and 19 h) for 184 days. Positive growth was observed in both indoor and outdoor tanks. There was no significant difference in the growth of prawns fed outdoor (p>0.05) while there was significant difference indoors. The percentage survival of prawns was higher outdoors and there was no significant hfference (p>0.05) while there was significant hfference (p<0.05) in the survival indoors. The carcass composition of A. crassa fed the three diets showed crude protein lower at harvest than the prawns stocked initially. Percentage lipid, ash and fibre of the harvested prawns were higher than at initial stocking. A. crassa is cultivable in freshwater and it should be reared with 30% crude protein diet in outdoor systems. © 2013 Academic Journals Inc.


Ovie S.O.,National Institute for Freshwater Fisheries Research | Eze S.S.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2012

In the use of plant based ingredients for production of cost effective feed, lysine being one of the deficient amino acid in such feed must be present in the required quantity for Oreochromis niloticus in order to impact on its production positively. This study was carried out to investigate the lysine requirement and its effect on the body composition of Oreochromis niloticus fingerlings. Two hundred and seventy fingerling O. niloticus (9.01-11.09 g) were reared in 35 L plastic troughs. Six diets were formulated, containing 35% crude protein. The diets were formulated with ingredients deficient of lysine (Groundnut cake -3.23 g lysine/100 g diet and guinea corn -1.9 g lysine/100 g diet) for O. niloticus having whole body content of 7.51 g lysine/100 g protein. The diets consist of a basal diet (Diet I, no added lysine), while the test diets (II, III, IV and V) had 4.56, 6.87, 7.30, 7.41 g lysine/100 g protein, respectively. The reference diet was made of Clupeids (mixture of Pellonula afzeliusi and Physalia pellucida), groundnut cake and guinea corn but no added lysine (5.37 g lysine/100 g protein). The fish were fed twice daily (09.00 and 18.00 h) at 3% body weight for 56 days. There was significant difference in the mean weight gain and food conversion efficiency (p<0.05). The four levels of lysine resulted in quadratic responses (p<0.05). Calculation using regression equations from the relationship between the specific growth rate, weight gain and lysine levels show that lysine requirement for fingerling was 7.12 g/100 g protein, respectively. The requirement of O. niloticus for lysine is 7.12 g lysine/100 g protein. © 2013 Academic Journals Inc.


Idris G.L.,National Institute for Freshwater Fisheries Research | Omojowo F.S.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2012

The effects of groundnut oil and sohum chloride as protectants against insect infestation of dried fish were investigated for a period of 13 weeks. The fish samples were divided into 3 groups, a group was soaked for 10 min in 30% sohum chloride solution (Brine) and the second group was dipped in groundnut oil after smoking while the third group served as control. The samples were kept in different containers in the laboratory at temperature of 28°C and 70% relative humidity for 13 weeks. Results show that, the fish treated with 30% sodium chloride was effectively protected from insect and moulds compared to sample treated with groundnut oil. The odour and the texture were also more attractive to customers. However, fish treated with groundnut oil was attacked by insects at week 12th and 13th with 6 Maculatus, 4 Necrobia rufipes species and at few mould colonies. The control specimens however was attacked by insects from week 8th to 13th with numerous number of both Necrobia rufipes and Maculatus species as well as mould colonies showing as early as from the 6th week. The results proved that sodium chloride is more effective than groundnut oil for long period of storage. © 2013 Academic Journals Inc.


Uka U.N.,National Institute for Freshwater Fisheries Research | Mohammed H.A.,National Institute for Freshwater Fisheries Research | Aina E.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2012

The increase of urban and industrial activities has led to pollution and deterioration of Asa river. A study aimed at ascertaining heavy metal concentrations and allocation in Phragmites karka growing in polluted sites of Asa River with the prospect of using Phragmites karka in phytoextraction of zinc, copper, cadmium and lead was carried out. Phragmites karka was separated into (roots, stem and leaves), water and sediment samples were collected from three sampling points in Asa River were analysed using Flame atomic absorption Spectrophotometer. The results of the translocation ability were in the order Cu>Zn>Cd and Pb. The bioconcentration factor for Zn, Cu, Cd and Pb in the root, stem and leaf had low values thus, a limited transportability of heavy metals from the sediment t o t h e plant. Heavy metal accumulation i n the roots was greater than those of the shoots. The quantities of accumulation in the roots were i n t h e order Zn>Cu>Pb>Cd. Translocation values>l were found for Zn and Cu while Translocation values for Cd and Pb<1. I t can be deduced from the result that these metals (Zn, Cu, Cd and Pb) have limited translocation to the aerial parts of plant. Cu and Zn accumulations are transported to shoots while Cd and Pb are storedin the roots. Enrichment coefficient of Zn, Cu, Pb and Cd was <1.0. This study suggests that Phragmites karka is less suitable for sequestering of these studied heavy metals. © 2013 Academic Journals Inc.


Nnaji J.C.,National Institute for Freshwater Fisheries Research | Madu C.T.,National Institute for Freshwater Fisheries Research | Raji A.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2012

An experiment was conducted between August and November, 2008 at Wuya-Bida to determine the profitability of integrating fish culture into rice farming. Two treatments (mono-rice and rice-fish) in triplicate were used. The area of each plot was 144 m2 and the mono-rice plots consisted of only rice farming while the rice-fish plots had rice farming incorporated with the raising of Oreochromis niloticus and Clarias gariepinus fingerlings. The fish were fed with compounded feed and wheat offal and at the end of the experimental period of 60 days, O. niloticus fingerlings had a mean weight gain of 47.60+1.86 g in the rice-fish plots while C. gariepinus fingerlings had a mean weight gain of 110.80+2.92 g. C. gariepinus fingerlings performed better than O. niloticus fingerlings. Values for physicochemical parameters showed that both pH and dissolved oxygen were outside the favourable limits (pH: 6.5-9, DO: >5 mg L-1) recommended for warm water aquaculture in the rice-fish plots. Cost-benefit analysis showed that the integration of fish into the rice system confers substantial profitability on the system going from the production, total and net income hfferences between mono-rice and rice-fish plots. However, cost-benefit ratio of the mono-rice plots was slightly better than that of the rice-fish plots. © 2013 Academic Journals Inc.


Ojukannaiye A.S.,Federal University of Technology Owerri | Mogaji O.Y.,National Institute for Freshwater Fisheries Research | Asuwaju F.P.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2014

A study was conducted at the farm section of the Department of Fisheries Technology, Federal Polytechnic Nekede, Owerri in 2012. Factorial design of five treatments of cassava peel meal at 0, 25, 50, 75 and 100% graded level were formulated. The cassava peel meal was sundried for 48 h, ground and added to the feed fed to 150 fingerlings of Oreochromis niloticus into 10 tanks in triplicates and fed twice daily at 5% body weight for 60 days. The result shows that fish fed with 100% cassava peel meal had the highest mean weight gain of 10.46±0.01 and specific growth rate of 1.23±0.04. The second best result was shown in fish fed with 75% cassava peel meal with weight gain of 9.93±0.03, Feed Conversion Ratio (FCR) of 1.75±0.04 and specific growth rate of 1.24±0.02. The poorest result was shown by fish fed 25% cassava peel meal with the lowest survival rate, weight gain, feed intake and specific growth rate, respectively. This connotes that diet with 100% fed graded level of sundried cassava peel meal can best be utilised at a ratio of 75 to 15% CPM and second best diet with 75% fed graded level of sundried cassava peel meal could also be utilized at 11.25% inclusion due to its survival rate parameter over the best. Moreover, this proportion should be utilised for improve growth of Nile tilapia (Oreochromis niloticus) for profit maximization. © 2014 Academic Journals Inc.


Ago N.D.,National Institute for Freshwater Fisheries Research | Binyotubo T.E.,National Institute for Freshwater Fisheries Research | Kwen K.,National Institute for Freshwater Fisheries Research
Journal of Fisheries and Aquatic Science | Year: 2014

Studies on the meshsize selectivity of multifilament gillnet at Fakun village North of Lake Jebba were carried out. Four different meshsizes (76, 101, 126 and 177 mm) of multifilament nets were used in the construction of the gillnet with hanging ratio 0.5 each. Daily catch from the nets were examined for seven weeks. The fish caught comprised of nine species belonging to six families. The result of analysis of variance of the number of species caught showed significant difference (p<0.05) among the different meshsizes of the gillnet. The catch mean weight for each meshsize (76, 101, 126 and 177 mm) was 266.91, 285.54, 305.10 and 349.02, respectively also the relative percentage of number of species caught by each of meshsize was 39.48% for 76 mm, 23.58% for 101 mm, 22.44% for 126 mm and 14.48% for 177 mm which depicts the selectivity in the catch of the gillnets in this experiment. © 2014 Academic Journals Inc.

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