ABSTRACT A survey involving the use of structured questionnaires and personal communication was undertaken in South Western Nigeria to identify the livestock in the area, and their housing methods.. Chicken, pigs, rabbits, goats, sheep and cattle were the major animals found while the housing structures include baskets, battery cages, deep litter houses, cages, hutches, eggs, sheds and yards. In about half of the sites surveyed animals kept were not provided with housing, while in other pla...
ABSTRACT Wet sieving is still a manual operation in tropical crop processing. It is a time consuming operation. Most of the existing wet sieving machines are available in large scale industries and they are too sophisticated to operate and maintain by local processors. Therefore, a motorized starch extracting machine, based on shaking mechanism was designed, fabricated and tested to solve the problem associated with sieving of starch and other agricultural crops in Nigeria. The machine consis...
ABSTRACT In this study, the product temperature response of a single screw extruder developed locally was investigated for the extrusion process of the flour and starch of maize and cassava which are grown in Nigeria in large quantity but yet underutilized. These were compared with wheat flour which is commonly used for the production of alimentary pastes in a factorial experiment in completely randomized design A maximum temperature of 150oC per 30 minutes was attained through viscous dissip...
ABSTRACT In this study, the effect of extrusion process parameters of a locally developed extruder on the moisture loss of extrudates of the flour and starch of maize and cassava which are grown in Nigeria in large quantity were characterized. These were compared with those of wheat flour which is commonly used for the production of alimentary paste. The parameters considered include feed moisture (30, 40, 50 %), extruder temperature (40, 70, 100oC) built up by varying the duration of samplin...
Abstract: In this study, the effect of extrusion process parameters of a locally developed extruder on the expansion of extrudates of the flour and starch of maize and cassava which are grown in Nigeria in large quantity was characterised. These were compared with those of wheat flour which is commonly used for the production of alimentary paste. The parameters considered include feed moisture (30, 40, 50 % d.b.), extruder temperature (40, 70, 100oC) varied by continuous running of the machin...
AbstractA two-dimensional transient heat conduction equation was solved by finite- difference method to predict temperature variations within the maize (Zea mays) bin. The mathematical model comprises the center, interior and exterior heat transfer equations. Variables used include bin diameter, bin-wall material, grain temperatures, grain thermal and air properties. Software was developed for the model in Visual Basic. Temperatures within the silo were predicted at radii 0.0m (silo center), ...
The study aimed at the design, construction and performance evaluation of a model Waste Stabilization Pond (WSP). The WSP comprised of one facultative pond and three maturation ponds all in series. The influent of the WSP after filtration through the lined sandy loam media (obtained from the premises of Federal University of Technology, Owerri, Nigeria) had the BOD reduced to 22 mg/L from 356 mg/L indicating a 93.8% removal level. A faecal coli form count (fc) of the influent sample gave 1×1...