DSpace Collection: WAFT

Advanced Feeding Technologies for Cold-Water Aquaculture: Mechanisms and Applications of Immersive Feed Soakers and Smart Delivery Systems in Rainbow Trout (Oncorhynchus mykiss)

Wed, 01 Jan 2025 00:00:00 GMT

Title: Advanced Feeding Technologies for Cold-Water Aquaculture: Mechanisms and Applications of Immersive Feed Soakers and Smart Delivery Systems in Rainbow Trout (Oncorhynchus mykiss) Authors: U. R Parry., Yusuf, J., O. A Asimi

An Overview of Functional Genomics in Aquaculture

Wed, 01 Jan 2025 00:00:00 GMT

Title: An Overview of Functional Genomics in Aquaculture Authors: Yusuf Jaafar, Peerzada Zubair Ahmad, Mohd Ashraf Rather, and Ishtiyaq Ahmad

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

Sat, 01 Jan 2022 00:00:00 GMT

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

Thu, 21 Mar 2019 00:00:00 GMT

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.