The effects of nutritional strategies to reduce nutrient pollution in manure on the performance and carcass traits of pigs

The objective was to evaluate the effect of different nutritional strategies on performance and carcass traits of pigs from 30 to 100kg. One hundred and twenty pigs were used, distributed in randomized blocks, with five treatments and eight replicates of three animals per experimental unit. Treatments were: control diet = corn-soybean based diet without synthetic amino acids; low crude protein diet = corn-soybean based diet with low protein and synthetic amino acids; phytase diet = control diet supplemented with phytase; organic diet = control diet supplemented with inorganic and organic minerals; and combination diet = diet with low protein supplemented with phytase and inorganic-organic minerals. Means were compared with the control diet by the Dunnett test. The diets evaluated did not alter the performance of pigs when compared to pigs fed the control diet. The reduction of crude protein, supplementation with phytase and inorganic-organic minerals can be adopted without significantly changing performance during the growing-finishing and carcass traits at 100kg.