Study On New Model Of Phase Feeding In Growing-Finishing Pigs

We studied on effect of four phase finishing model on performance of growing-finishing pigs.The ideal animo acid balance model was used in both three phase and four phase finishing model.The performance,digestibilities of nutrients,serum urea nitrogen and total protein,carcass composition were determined.After feeding trail finished,economy benfit were evaluated.The purpose of this paper was to find a better finishing model in growing-finishing pigs. The results showed that:l) Low protein diet,necessary amino acid supplemented could keep similar performance with high protein diet,the iigestibilities of crude protein were improved,serum urea nitrogen were Iecreased,economy benefit was improved. 2)Compared with three phase :inishing model and four phase finishing model,we found four phase finishing iiodel could improve performance of pigs and decrease digestibilities of ~rude protein and serum urea nitrogen,but carcass composition had no ;ignificance difference(p>0.05).Economy benefit was improved.So four phase inishing model was a better finishing model.