Hyunwoong Jo
Department of Animal Science and Technology, Konkuk University, Seoul-05029, Republic of Korea
Changsu Kong
Department of Animal Science and Technology, Konkuk University, Seoul-05029, Republic of Korea
Doo Seok Nam
Department of Animal Science and Technology, Konkuk University, Seoul-05029, Republic of Korea
Beob Gyun Kim
Department of Animal Science and Technology, Konkuk University, Seoul-05029, Republic of Korea
ABSTRACT
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.
PDF References
How to cite this article
Hyunwoong Jo, Changsu Kong, Doo Seok Nam and Beob Gyun Kim, 2015. Mixing Performance of a Novel Flat-Bottom Vertical Feed Mixer. International Journal of Poultry Science, 14: 625-627.
DOI: 10.3923/ijps.2015.625.627
URL: https://scialert.net/abstract/?doi=ijps.2015.625.627
DOI: 10.3923/ijps.2015.625.627
URL: https://scialert.net/abstract/?doi=ijps.2015.625.627
REFERENCES
- AOAC., 2005. Official Methods of Analysis of the Association of Official Analytical Chemist. 18th Edn., Horwitz William Publication, Washington, DC., USA.
Direct Link - Cromwell, G.L., J.H. Brendemuhl, L.I. Chiba, T.R. Cline and T.D. Crenshaw et al., 2003. Variability in mixing efficiency and laboratory analyses of a common diet mixed at 25 experiment stations. J. Anim. Sci., 81: 484-491.
PubMedDirect Link - Groesbeck, C.N., R.D. Goodband, M.D. Tokach, S.S. Dritz, J.L. Nelssen and J.M. DeRouchey, 2007. Diet mixing time affects nursery pig performance. J. Anim. Sci., 85: 1793-1798.
CrossRefDirect Link - Kil, D.Y., B.G. Kim and H.H. Stein, 2013. Feed energy evaluation for growing pigs. Asian Aust. J. Anim. Sci., 26: 1205-1217.
CrossRefDirect Link - Kong, C. and O. Adeola, 2014. Evaluation of amino acid and energy utilization in feedstuff for swine and poultry diets. Asian Aust. J. Anim. Sci., 27: 917-925.
CrossRefDirect Link - McCoy, R.A., K.C. Behnke, J.D. Hancock and R.R. Mcellhiney, 1994. Effect of mixing uniformity on broiler chick performance. Poult. Sci., 73: 443-451.
CrossRefDirect Link - Robbins, K.R., A.M. Saxton and L.L. Southern, 2006. Estimation of nutrient requirements using broken-line regression analysis. J. Anim. Sci., 84: E155-E165.
PubMedDirect Link - Son, A.R., S.Y. Shin and B.G. Kim, 2013. Standardized total tract digestibility of phosphorus in copra expellers, palm kernel expellers and cassava root fed to growing pigs. Asian Aust. J. Anim. Sci., 26: 1609-1613.
CrossRefDirect Link