This experiment was conducted to study the effect of low protein diet on growth performance and diarrhea rate in growing pigs. Sixty-six crossed-bred (Duroc ×Landrace ×Yorkshine) pigs, weighing an average of 16 kg, were randomly assigned to two dietary treatments with three replicates and eleven pigs with each pen. The groups received basic diet and trial diet respectively. The basic diets were formulated in accordance with NRC (Nutrient requirements of swine)(1998) nutritional requirements, while the trial diet protein level was 0.38% ...