An Evaluation of a Locally Produced Instrument to Measure feed Pellet Durability

M. K. Abdullah, B. A. Al-Shamari, S. S. Abdul Sattar

Abstract


Pellet durability is an important indicator ofpellet quality. A pellet durability test instrument (equipment) was developed (manufactured) locally (University of Baghdad, Iraq). The unit consists of a tumbling can (to receive and drop the sample) with the dimensions of 300×125×300 mm. The knife is affixed at a perpendicular and diagonal angle inside the can and its length is 230 mm. One portion of the knife (serrated for 50 mm) has a projection of 50 mm. A firm door was designed to be dustproof. The can is placed on an 81cm (height) shaft . The can has the ability to rotate around a perpedicular axis which is powered by an electric motor..
The local durability instrument was used to test pellets produced under the following conditions:
1. Pellets were manufactured by pellet screw mincer with hole diameters of 4.4 and 7 mm
2. Mash particle size (grind) to go through 1 and 2 mm sieve diameters.
3. Mash moisture of 35.6, 38.9 and 42.3%.
Pellet durability, pellet density and pellet water stability were studied in this experiment. A completely randomized design (CRD) with three replications was used. The results showed that increasing the size of the production holes led to a significant decrease in pellet durability and water stability; however, there was no significant effect on pellet density. Decreasing the grind size led to significant increase in pellet durability, pellet density and pellet water stability . Increasing mash moisture caused significant increase in pellet durability and pellet water stability; however, it significantly lowered pellet density. In addition there was a high correlation between mash moisture and pellet durability.

Keywords


Pellet Durability, Instrument To Measure Pellet Durability, Mash Particle Size, Mash Moisture

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