MANUFACTURING AND TESTING PERFORMANCE AND EFFICIENCY MIXING OF LABORATORY MIXER FOR FEEDS SAMPLES

Abstract

A mixer laboratory was manufactured and tested, used for mix the feeds samples inside the laboratory. It consists a cylindrical metal body inside a fins spin provide the operator with the movement after the reduction of it by a small electric drive by Pulleys and belts. Provided the board electronic control with digital display to indicate the test period according to the time to be a process during it. The device has on the gate for the purpose of dictate the unloading Feed sample and the device has a little weight and easy to carry. Factorial experiment was implemented for testing included mix by mixer and mixing by hand with four times the mixing. A completely randomized design with three replicates was used. Results showed that the use of mixer significantly effected protein level as compared with manual whereas productivity and levels of calcium and phosphorus were not affected. Mechanical mixing is led to lower coefficient of variance and standard deviation. There is no significant effect of mixing periods on power consumption and levels of protein, calcium and phosphorus and significantly effected on efficiency and productivity, increasing periods of mixing decreased variation coefficient and standard deviation.