TY - JOUR
T1 - Mixing performance of a novel flat-bottom vertical feed mixer
AU - Jo, Hyunwoong
AU - Kong, Changsu
AU - Nam, Doo Seok
AU - Kim, Beob Gyun
N1 - Publisher Copyright:
© Asian Network for Scientific Information, 2015.
PY - 2015
Y1 - 2015
N2 - The objective of the present study was to test mixing performance of a flat-bottom vertical mixer. The mixer has a capacity of 250 liter with 430 mm height and 900 mm diameter. A diet was formulated to contain 69.5% corn, 27.5% soybean meal, 0.9% limestone, 0.8% dicalcium phosphate, 0.5% vitamin-mineral premix, 0.45% salt and 0.4% chromic oxide. The mixing performance of the mixer was tested with 80 kg batch in triplicate for 30, 180, 300 and 420 sec. At the end of each mixing, 100 g of samples were collected from the initial 5, 30, 60 and 95% of feed discharged from the spout end of the mixer. The 4 samples from each mixing time were analyzed for the concentrations of crude protein. The coefficients of variation of crude protein among the samples from each mixing of 30, 180, 300 and 420 sec were 14.8, 7.4, 6.7 and 6.0%, respectively. A broken-line analysis was conducted to estimate the minimum mixing time. The result indicated that the most suitable mixing time was 202 sec (R2 = 0.99; p = 0.077). In conclusion, at least 200 sec of mixing is required for optimum mixing performance of the novel feed mixer.
AB - The objective of the present study was to test mixing performance of a flat-bottom vertical mixer. The mixer has a capacity of 250 liter with 430 mm height and 900 mm diameter. A diet was formulated to contain 69.5% corn, 27.5% soybean meal, 0.9% limestone, 0.8% dicalcium phosphate, 0.5% vitamin-mineral premix, 0.45% salt and 0.4% chromic oxide. The mixing performance of the mixer was tested with 80 kg batch in triplicate for 30, 180, 300 and 420 sec. At the end of each mixing, 100 g of samples were collected from the initial 5, 30, 60 and 95% of feed discharged from the spout end of the mixer. The 4 samples from each mixing time were analyzed for the concentrations of crude protein. The coefficients of variation of crude protein among the samples from each mixing of 30, 180, 300 and 420 sec were 14.8, 7.4, 6.7 and 6.0%, respectively. A broken-line analysis was conducted to estimate the minimum mixing time. The result indicated that the most suitable mixing time was 202 sec (R2 = 0.99; p = 0.077). In conclusion, at least 200 sec of mixing is required for optimum mixing performance of the novel feed mixer.
KW - Coefficient of variation
KW - Crude protein
KW - Feedstuff
KW - Mixing efficiency
UR - http://www.scopus.com/inward/record.url?scp=84952645178&partnerID=8YFLogxK
U2 - 10.3923/ijps.2015.625.627
DO - 10.3923/ijps.2015.625.627
M3 - Article
AN - SCOPUS:84952645178
SN - 1682-8356
VL - 14
SP - 625
EP - 627
JO - International Journal of Poultry Science
JF - International Journal of Poultry Science
IS - 11
ER -