The goal of this study was to evaluate the effect of including crude palm oil (CPO) in the diet of finishing pigs in terms of growth performance and nutrient digestibility. In the first experiment, 40 barrows and 40 gilts (Duroc×LargeWhite×Landrace) were divided into five groups using a randomized complete block design. CPO, soybean oil (SBO) and poultry fat (PF) were mixed and divided into CPOmix11 (CPO 50% + PF 50%), CPOmix13 (CPO 50% + SBO 50%), CPOmix21 (CPO 75% + PF 25%) and CPOmix23 (CPO 83% + PF 17%). Each group of pigs was randomly fed two diets at 50-80 and 80-100 kgBW. Group 1 comprised the pigs fed diet10 (without oil inclusion) and diet20 (without oil inclusion). Group 2 comprised the pigs fed diet11 (1% CPOmix11) and diet21 (1% CPOmix21). Group 3 comprised the pigs fed diet13 (3% CPOmix13) and diet23 (3% CPOmix23). Group 4 comprised the pigs fed diet10 and diet 21. Group 5 comprised the pigs fed diet10 and diet23. The results showed that the pigs fed diet23 (Group 5) at 80-100 kgBW tended to have the greatest performance and lowest feed cost. In the second experiment, nutrient digestibility was examined in six barrows (initial 50 kgBW) using a 3×3 double Latin square design. Each set of two pigs was randomly fed diet10, diet11 or diet13. The highest (P<0.01) digestibility of dry matter, protein, crude fiber and ash and the greatest (P<0.01) digestible energy and metabolizable energy were found in diet13. The inclusion of 3% CPOmix23 in the diet at80-100 kgBW might improve finishing pig performance, and the 3% of CPOmix13 in the diet improved nutrient digestibility.Keywords: crude palm oil, finishing pigs, growth performance, nutrient digestibility. AGROFOR InternationalJournal, Vol. 1, Issue No. 2, 2016 29 INTRODUCTIONFats and oils have the highest average energy density of all macronutrients. Besides having high caloric value, some fats and oils like crude palm oil(CPO) can be a primary source of essential fatty acids, which cannot be synthesized by pigs, as well as fat-soluble vitamins and antioxidants such as phytosterols, tocopherols and carotenoids that help preserve and stabilize fats. These micronutrients are essential for animal health, growth and carcass quality. Moreover, the use of particular types of fats and oils in pig rations affect the metabolizable energy of the total rations beyond the calculated energy of the diet. Finally, fats and oils can play a significant role in creating pelleted products and controlling mill and barn dust. CPO is extracted from the mesocarp of the fruit of the oil palm tree, Elaeis guineensis. Palm oil and its refinery products are now consumed worldwide as cooking oil and in a wide variety of foodstuffs (Pantzaris, 1995). CPO has a dark orange-red color due to its high carotenoid content. It is also a rich source of vitamin E, namely tocopherols and tocotrienols (Nesaretnam and Muhammad, 1993). Both β-carotene and vitamin E are well-known nutritional antioxidants. The over-expanding production of palm oil in Thailand and other tropical countries of...