In conclusion, the results showed that pelleting copra meal and crumbling the pellet to a large particle size increased chick performance, whereas the same ingredients ground to a small particle size decreased the performance of birds. Difference in particle size also changed the relative dimensions of the parts of the digestive tract. The ratio of gizzard digesta weight to duodenum digesta weight that gave the best results was 2.16 and the ratio that gave the worst results was 1.63. Better performance of birds was achieved when enzymes were included in the diet.