Abstract:

Abstract: Study on the effects of Cu(Ⅱ)-exchanged montmorillonite nanoparticles on growth performance and some blood biochemical indexes of pigs.A total of 72 weaning pigs (Duroc×Landrace×Yorkshire) were used to investigate the effects of Cu(Ⅱ)-exchanged montmorillonite nanoparticles(MMT-Cu) on growth performance and some blood biochemical indexes of these pigs and verify MMT-Cu can promote growth performance more than antibiotics.The weaning pigs were allocated to three dietary treatments in a randomized complete block design.The dietary treatments were basal diet，basal diet + 20 mg/kg tylosin+100 mg/kg SM2 and basal diet + 1500 mg/kg MMT-Cu.The results showed that the addition of MMT-Cu to the diet decreased extremely significantly（P<0.01）the F/G during the whole test; the concentration of ALB,SUN,Ch,Tp in surum decreased extremely significantly （P<0.01）; the concentration of Ca,GPT in serum increased extremely significantly (P<0.01) and TG,GLU decreased(P<0.05). These pigs feed the basal diet + 1500 mg/kg MMT-Cu increased the ratio of F/G，and there were various effects on ALB,Ca,GPT,SUN,TG,Ch,TP,GLU.

Key words: Key words: Cu(Ⅱ)-exchanged montmorillonite nanoparticles(MMT-Cu); growing-finishing pigs; growth performance; blood biochemical indexes