Pigs were assigned to คอก within a weight block
to achieve an even representation
on the basis of weight, breed-type, and gender.
Treatments were assigned randomly to the คอก of pigs within a block.
Feeding and Growth Performance. Weights were recorded throughout the study to monitor growth rates (Rice Lake Weighing Systems, Rice Lake, WI; IQ Plus® 390-DC/590-DC Digital Weight Indicator / Paul Scale, W-W Manufacturing Thomas, OK; Model 58SX Hog and Sheep Crate Scale). Weights taken at the beginning of the experiment served as initial weights. The trial began when the average pen weight reached 59 kg. Prior to the start of the study, pens and feeders were steam cleaned and sanitized in order to provide a healthy environment for the pigs. Animals were visually inspected to confirm that they were healthy and sound enough to participate in the study. Feed composition is represented in Table 1.