Abstract: In order to control the emission reduction of livestock manure from the source and improve the benefit of pig breeding, 40 finishing pigs of the same age and similar initial weight (P>0.05) were divided into 4 groups, 1 control group (normal feeding) and 3 experimental groups, each group had 10 pigs. The experimental group was divided into feeding restriction 10% group, feeding restriction 20% group and feeding restriction 30% group. After 50 days of feeding restriction and 30 days of lifting feeding restriction, the feeding and management conditions of each group were basically the same, the results showed that during the feeding restriction period, the fecal production, final weight and average daily gain of each group were significantly lower than those of the control group (P<0.05); After the lifting of feed restriction, compared with the control group, the feces of the feed restriction 20% group and feed restriction 30% group were significantly decreased, and the average daily gain was significantly increased (P<0.05), while the final weight of the 20% feed restriction group was slightly higher than that of the control group, and the difference was not significant, and the 30% feed restriction group was significantly lower than that of the control group. Comprehensive analysis showed that the fecal excretion of 20% feed restriction group was reduced, and the effect of compensatory growth mode was better.

Key words: compensatory growth, fattening pigs, fecal emission reduction, growth performance