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Effect of Sorghum-Based Diets Subjected to Various Manufacturing Procedures on Broiler Performance

Department of Animal Science and Industry, Kansas State University, Manhattan, Kansas 66506

Correspondence: K. R. Cramer, E-mail: sbeyer{at}oznet.ksu.edu

Two experiments evaluated the effect of expanding sorghum-based diets prior to pelleting on 0-to-3-wk (experiment 1) and 3-to-6-wk (experiment 2) broiler performance. In experiment 1, three forms (mash, standard crumbles, and expanded crumbles) of the same sorghum-based starter diet were each fed to 14 replicate pens of 1-d-old male chicks (8 per pen). Expansion conditioning resulted in improved pellet durability and lower fines production; however, processing differences did not affect chick live weight gain, feed intake, or feed efficiency. In experiment 2, standard pellets or expanded pellets were fed to 13 replicate pens of 3-wk-old male broilers (20 per pen). Similar to experiment 1, expansion conditioning resulted in improved pellet durability and decreased fines production, yet processing differences did not affect broiler performance.

Key Words: broiler performance • feed manufacturing • sorghum • expansion • pellet durability