Whole cottonseed and cotton gin by-products (CGBP) were mixed together and processed in a dry extruder to determine the feasibility of the mixture as a livestock feed. Samples were collected during the study to determine if the temperature, pressure and shear associated with extrusion would reduce the chemical residues in the CGBP and affect the nutritional value of the mixture. The first test focused on mixing ratios of CGBP and cottonseed with a constant temperature and pressure during processing. Results show a significant reduction in Methyl Parathion and DEF, while there were no significant reductions in Karate (Karate levels were below 1 ppm before the CGBP mixture was extruded). The second study focused on the extrusion of a 75 percent CGBP and 25 percent cottonseed processed multiple times by dry extrusion. The results of this study show significant reductions in Methyl Parathion and Dropp. A nutritional analysis was completed on the extruded material of the first study, showing significant differences in nutritional values of the various mixtures. Nutritional results from the second study showed significant differences in nutrient values due to the number of times the material was processed.
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