Effects Of Organic Trace Elements On Growth Performance And Serum Related Indexes Of Weaned Piglets

This experiment was conducted to investigate the effects of organic matter elements on growth performance,serum biochemical Index,antioxidant index and immune index of weaned piglets.Six hundred 35-day-old Duroc×Landrace×Large Yorkshire weaned piglets with body weight of(8.90±0.30 kg)were assigned to 5 treatments with 6 replicates per treatment and 20 pigs per replicate for a 35 d feeding period.Dietary treatments were as follows:(A)Control group(basal diet with 100% Industry level);(B)Inorganic group(1/2 level);(C)Organic group(1/2 level);(D)Inorganic group(1/3 level);(E)Organic group(1/3 level).At the end of the 35 th day,blood samples were taken from the anterior vena cava,and the serum biochemical indexes,antioxidant indexes and immune indexes were measured.The results showed that:1.Growth performance: Compared with the control group,the average daily gain,average daily feed intake and material weight ratio of weaned piglets were not significantly different(P> 0.10).Compared with the addition of 1/2 level of inorganic trace elements,the addition of the same level of organic form of trace elements decreased the weight ratio by 4.46%(P <0.10).2.Serum biochemical parameters:compared with the control group,the level of serum urea nitrogen was significantly higher than that of the control group(P<0.05).compared with the control group,the serum level was significantly lower than that of the control group(P< 0.05).There was no significant difference in serum between different treatments(P > 0.10).3.Antioxidant index : compared with the control group,the concentration of Cu / Zn-SOD in serum was decreased by 10.27%,but the difference was not significant(P< 0.10).There was no significant difference between the other treatments(P>0.10).4.Immune index: Compared with the addition of 1/3 level of inorganic trace elements,adding the same level of organic form of trace elements can significantly increase the serum immunoglobulin Ig G content,increased 71.89%(P< 0.05).There was no significant difference between the other treatments(P> 0.10).5.Fecal metal content: Compared with the control group,the addition of trace elements could decrease the content of copper and iron in the fecal of weaned piglets significantly(P<0.05).Compared with the addition of the same level of inorganic trace elements(1/3 level),The addition of organic form of trace elements decreased the concentration of copper,iron and manganese in feces,but the difference was not significant(P< 0.10).In conclusion,reduce the level of trace elements,will not reduce the growth performance of piglets;add the same level(1/3,1/2)compared to the inorganic trace elements,add metal protein salts organic trace elements on weanling piglets growth performance(P> 0.05).When the added level was 1/3 of the organic level,the content of immunoglobulin Ig G in piglets could be significantly increased(P<0.05),and the level of immunoglobulin Ig G was significantly increased(P> 0.05)Reduce the content of copper,iron and manganese in feces(P<0.05),reduce the pollution to the environment.