Through thisway,theresponseofweightgainto
supplementisimprovedbyincreasingtheCPcontentofthesupplement,butdecreasedas
theCPintheforageincreases.Fromthisitcanbeconcludethatthereisapositiveresponse
tonitrogensupplementationwithregardstoENUandanimalperformance.Themainbenefit
ofsupplementationistheimprovementofthenitrogenstatusintheanimal'smetabolism.