MATERIALS AND METHODS
The experiment was conducted in a well manage commercial farm (M.W. Farm) in Khon Kaen Province, Thailand. A total of 192 crossbred pigs [Duroc (Yorkshire x Landrac)] weaning at 21 days of age (average 6.3 kg BW) with balance sexes and genetic background were devided into four treatments with 4 replications of 12 pigs each (2 replications for males and 2 replications for females). All pigs were house in an environmentally regulated nursery pen throughout the study (21-56 days of age). All pigs were given ad libitum access to feed and water. One twelve-hole feeder and two nipple waterers were available per pen. Pigs were weighed at initial and final weight (35 days period). Feed intake and morbidity of diarrhea are recorded every day until termination. Pigs uniformity was accounted as percentage units that fell into two times of standard deviation based on average live weight at termination. The four treatments consisted of the control diet with unsupplemented PorcininTM for Treatment 1 (T1), the control diet supplemented with PorcininTM at the level of 0.03 % for Treatment 2 (T2), 0.05 % for Treatment 3 (T3) and 0.07 % for Treatment 4 (T4). The composition of experimental diets are shown in Table 1. The diets were fed to pigs in mash form