Effect of Forming Holes and Moistening Water Temperature on Some physical Quality Characteristics of Poultry Feed Pellets


  • Basim Aboud Aabbas Department of Animal Production




Broken pellet, Pellet formation, Feed manufacturing, Pellet temperature, Pellet moisture


The research aims to investigate the effect of feed manufacturing conditions on some significant physical traits of feed pellets for poultry feeding. The study was conducted using a factorial experiment of two factors that included the effect of the studied forming holes’ diameters at 2.5 and 4.5 mm, and the feed pellet moistening water temperature at 25 and 40 C°. Hence to find out their effect on the broken pellets, unbroken pellets, pellet expansion, and dust ratio. The results showed that increasing the diameter of the forming holes from 2.5 to 4.5 mm significantly affected the decrease in unbroken pellets, the increase in the percentage of broken pellets, pellet expansion ratio, and dust ratio. Increasing the temperature of the water from 25 to 40 C°, led the percentage of unbroken pellets to increase significantly and the percentage of broken pellets, and pellet expansion ratio decreased significantly. Whereas no significant effect on dust was recorded. The highest resistance to pellet breakage was 96.66%, the least percentage of unbroken pellets was of 3.38%, and the lowest dust content was 0.48%, with 2.5 mm holes and 40 C°. The lowest expansion ratio was 6.13% with 2.5 mm holes and 25 C°. It was concluded that the increase in the diameter of the forming holes led to an increase in the percentage of broken pellets, the percentage of expansion ratio, and the percentage of dust. Increasing temperature of the water led to an increase in the percentage of unbroken pellets, while there was no significant effect on the percentage of dust. We recommend increasing the diameter of the forming holes according to the age of the animals and using steam for moistening rather than hot water.


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بشير، سعد زغلول. (2003). دليلك إلى البرنامج الإحصائي SPSS، الإصدار العاشر، المعهد العربي للتدريب والبحوث الإحصائية.

محمد علي، لطفي حسين و توفيق فهمي دميان. (1988). معدات مكننة الإنتاج الحيواني، جامعة بغداد، وزارة التعليم العالي والبحث العملي، ص 255 .

Aljebory, H. H. D., & Naji, S. A. (2021). Effect of Pelleted Fermented Feed-in Egg Quality of Laying Hens. Diyala Agricultural Sciences Journal, 13(1), 41-57. DOI: https://doi.org/10.52951/dasj.21130105

Behnke, K. C. (2001). Factors influencing pellet quality. Feed Tech, 5(4), 19-22.

Behnke, K. C., & Beyer, R. S. (2002). Effect of feed processing on broiler performance. VIII. International Seminar on Poultry Production and Pathology, Santiago, Chile,

Čolović, R., Vukmirović, Đ., Matulaitis, R., Bliznikas, S., Uchockis, V., Juškienė, V., & Lević, J. (2010). Effect of die channel press way length on physical quality of pelleted cattle feed. Food and feed research. Novi Sad: Institute for Food Technology (FINS), 2010, Vol. 37, iss. 1.

Cubes, P. (2007). Crumbles-Definitions and Methods for Determining Density, Durability and Moisture Content. ASAE Standards S, 269.

Dozier, W. (2001). Cost-effective pellet quality for meat birds. Feed Management, 52(2), 1-3.

Hemmingsen, A., Stevik, A., Claussen, I., Lundblad, K., Prestl⊘ kken, E., S⊘ rensen, M., & Eikevik, T. (2008). Water adsorption in feed ingredients for animal pellets at different temperatures, particle size, and ingredient combinations. Drying Technology, 26(6), 738-748 DOI: https://doi.org/10.1080/07373930802046393

Hancock, J. D. (2000). Feed processing techniques that improve performance .Swine. Nutritionist Magazine Feed Grain, Knsas State University, 77 (1): 215-223.

Khater, E.-S. G., Bahnasawy, A. H., & Ali, S. A. (2014). Physical and mechanical properties of fish feed pellets. Journal of Food Processing & Technology, 5(10), 1. DOI: https://doi.org/10.4172/2157-7110.1000378

Lowe, R. (2005). Judging pellet stability as part of pellet quality. AFMA Matrix (South Africa).

Maier, D., & Briggs, J. (2000). Making better. Feed and Grain, 1, 12-15.

Misra, C. K., Sahu, N., & Jain, K. (2002). Effect of extrusion processing and steam pelleting diets on pellet durability, water absorption and physical response of Macrobrachium rosenbergii. Asian-australasian journal of animal sciences, 15(9), 1354-1358. DOI: https://doi.org/10.5713/ajas.2002.1354

New, M. (1987). Feed and feeding of fish and shrimp. Rome (Italie): FAO, ADCP/REP.

Pfost, H. (1976). Feed Manufacturing Technology. American Feed Manufacturing Association. Inc. Arlington.

Salas-Bringas, C., Plassen, L., Lekang, O., & Schuller, R. (2007). Measuring physical quality of pelleted feed by texture profile analysis, a new pellet tester and comparisons to other common measurement devices. Annual Transactions-Nordic Rheology Society, 15, 149.

Tanveer, J. M., Sivakumar, M., Balasubramanian, S., Vikneswaran, M., & Sabanayagam, S. (2018). Analysis of engineering properties of shrimp feed pellets.

Winowiski, T. S. (1995). Pellet quality in animal feeds. American Soybean Association.

Wood, K., Damiran, D., Smillie, J., Lardner, H., Larson, K., & Penner, G. (2019). Effects of pellet size and inclusion of binding agents on ruminal fermentation and total-tract digestibility of beef heifers, and cow performance under winter grazing conditions. Applied Animal Science, 35(2), 227-237. DOI: https://doi.org/10.15232/aas.2018-01832



How to Cite

Aabbas, B. A. (2022). Effect of Forming Holes and Moistening Water Temperature on Some physical Quality Characteristics of Poultry Feed Pellets . Al-Mukhtar Journal of Sciences, 37(3), 284–290. https://doi.org/10.54172/mjsc.v37i3.531



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