DSpace Collection: WAFT

Water Quality Assessment of the Proposed Kwadna Reservoir Within Gidan Kwanu Main Campus, Federal University of Technology Minna, Niger State, Nigeria

2023-08-01T11:14:36Z

Title: Water Quality Assessment of the Proposed Kwadna Reservoir Within Gidan Kwanu Main Campus, Federal University of Technology Minna, Niger State, Nigeria Authors: Ibrahim, S. U.; Ibrahim, A; Yusuf, J.; Adama, S.B; Abdulmumuni, A.N Abstract: The study assessed the Water Quality parameters of the Kwadna Reservoir located at Federal University of Technology, Minna guided by the following objectives: determine the variation of the physico-chemical parameter across the months, the stations and to provide baseline data of the various physical and chemical properties of water. The Physico-chemical parameters of the river were studied for twelve weeks. Water samples was taken from five (5) stations in the reservoir, biweekly for the period of study. Samples collected was taken to the department of Water Resources, Aquaculture and Fisheries Technology (WAFT) laboratory for analysis. The results of the research depict that there was no significant variation in the mean values of physico-chemical parameters observed across the Station (p>0.05), pH range from 7.05±0.03 -7.36 ±0.03, Conductivity 281.5±45.5-311.7±44.9 µS/cm, Total alkalinity 115.7±22.0 -174.0±18.9, Total hardness 48.1±9.5-57.4±11.3mg/L, Calcium 17.3±5.4-24.6±4.6mg/L, Magnesium 4.0±2.4- 8.6±2.9 mg/L, TDS 177.2±28.3-199.3±28.9mg/L,BOD 2.7±0.1-3.1±0.4mg/L, Dissolved oxygen 4.9±0.6-5.7±0.1mg/L, Carbon dioxide 1.7±0.9-3.4±2.3mg/L, BOD 2.7±0.1-3.1±0.4mg/L. Except Temperature and COD that has significant difference (p<0.05) range between 27.0±0.0- 28.5±0.50C and 18.1±2.8-104.9±45.9 mg/L respectively. For monthly variations most parameters had significant difference (p<0.05) except Temperature and BOD that has no significant difference (p>0.05). Most of the physico-chemical parameters studied were within WHO range set standard for optimal fish production and survival. The mean temperature of the Reservoir (29.46°C) is in line with FAO (2006), which states that temperature requirements of 250C–300C is optimum for fish growth. This shows that temperature in the proposed Kwadna Reservoir is suitable to support the growth of fish Therefore, constant monitoring of the reservoir should be encouraged

Evaluation of the efficiency of traditional and modified malian traps in Tagwai dam of Niger State

2021-11-27T21:20:22Z

Title: Evaluation of the efficiency of traditional and modified malian traps in Tagwai dam of Niger State Authors: Yusuf Ja'afar, S.L. Lamai; U.P. Yakubu Abstract: The evaluation to comparatively determine the efficiency of a traditional and modified Malian traps in capture fishery was conducted in Tagwai Dam, Niger State to ascertain the productivity of the dam and also find out the possibility of adapting the Modified Malian trap by fisherfolk as one of the conservation tools in fishery management. The outcome of the catches revealed that traditionalMalian trap caught 131 fishes, comprising of Sarotherodon galileus. Tilapia zillii, Clarias gariepinus, Oreochromis niloticus and Synodontis membraneceous. While modified semi-circular trap caught 58 fishes of same species and modified rectangular Malian traps also caught similar species excluding Hydrocynus forskalii. The species diversity index calculated for the traditional and modified Malian traps were 0.47 0.41 and 0.39 respectively. Based on the results, it was concluded that the traditional traps had higher catches than modified traps due to the smaller mesh size of the net used with no significant difference (P>0.05) between their biomass. Hence in terms of catch efficiency, the modified trap, proofed to have the potential in competing for species selectivity and biomass with its traditional counterpart and also efficient in trapping mostly large bodied size fish and allowed the escape of juvenile fishes. Modified Malian trap of this nature is recommended as one of the potential fishing gears in conserving aquatic resources.

Protein sparing effects of energy sources in diets of fishes

2021-08-13T08:49:40Z

Title: Protein sparing effects of energy sources in diets of fishes Authors: Orire, Abdullahi Muha mmad Abstract: Studies on Protein sparing effects of carbohydrate and lipid were carried out in Clarias gariepinus (African catfish) fingerlings (2.50 – 8.32 ±0.04g) and Oreochromis niloticus (Nile Tilapia) fingerlings (8.05 ±0.05g). Three sources of carbohydrate (corn starch, corn fibre and glucose D) and lipid (groundnut oil, palm oil and fish oil) and a protein source (Fishmeal) were formulated and fed to the two species of fish (Catfish and Tilapia) in feeding trials that spanned 8 weeks for each of the experiment. The lipid (L) and protein (P) were in ratios designated as 10L:40P, 15L:35P and 20L:30P for lipid based diets and C5:30P, C10:25P and C20:20P for carbohydrate based diets for C. gariepinus. The tilapia diets consist of 15L:25P, 10L:30P, 5L:35P and C10:30P, C30:25P, C50:20P for both the lipid and carbohydrate sources. There were significant differences (P<0.05) among the treatments for the two species in their mean weight gains (MWG), specific growth rates (SGR), feed conversion ratios (FCR), protein efficiency ratios (PER) and apparent net protein utilizations (ANPU) which resulted in protein sparing of various non-protein sources fed. In C. gariepinus, glucose and corn starch spared protein at 20 and 10 % inclusion levels thereby lowering the crude protein inclusion levels to 20 and 25 % respectively from 30%. The groundnut oil and palm oil also spared protein at 20 and 15 % lowering crude protein from 40 % to 30 and 35 % respectively. Corn starch was found to spare protein for growth in O. niloticus, at 30 % thereby lowering crude protein inclusion level to 25 % from 30 %; while, fish oil was found to spare protein better than other lipid sources at 10 % inclusion level, reducing the crude protein level to 30 % from 35 %. The derived digestible protein sparing effects of digestible carbohydrate in C. gariepinus was found to be 9.78 : 16.77 digestible glucose : digestible protein instead of the gross diet fed (20 : 20) glucose : protein ratio and 4.28 : 20.95 corn starch instead of 10 : 25 carbohydrate/protein (C/P) ratio fed. The derived digestible lipid sparing effects of digestible protein in C. gariepinus was found to be 16.80 : 25.22 ratio for groundnut oil instead of 20 : 30 gross diet fed and 12.87 : 29.52 palm oil instead of 15 : 35 gross diet fed. In O. niloticus, the derived digestible corn starch that spared digestible protein was found to be 12.72 : 19.75 instead of the gross 30 : 25 C/P ratio fed. However, the fish oil that spared protein in O. niloticus was found to be 8.45 : 25.36 as derived instead of the 10 : 30 L/P ratio fed. From the study, the protein sparing effects of carbohydrate and lipid in the two species of fish tested revealed protein sparing effects of non-protein sources for energy thereby expending available protein for growth.