Effects of iron additives from different sources on growth performance,serum biochemical and antioxidant indicators in finishing pigs
The aim of this study is to investigate the effects of iron additives from different sources on the growth performance,serum biochemical and antioxidant indicators of fattening pigs.120 ternary finishing pigs with an average body weight of(60.24±0.89)kg were randomly divided into 4 groups,with 5 replicates in each group and 6 pigs in each replicate.The trial lasted for a total of 72 days,with a pre trial period of 9 days and a formal trial period of 63 days.Add 100 mg/kg(calculated by iron)of ferrous sulfate,ferrous glycine,ferrous fumarate,and complex amino acid chelated iron to the basic diet as the experimental diet.The experimental results showed that adding glycine iron to the diet significantly increased the final body weight and average daily gain of finishing pigs(P＜0.05);The addition of glycine iron,fumarate iron,and amino acid iron significantly reduced the feed to weight ratio of fattening pigs(P＜0.05);In addition,the addition of different sources of iron to the diet had no significant effect on the average daily feed intake of fattening pigs(P＞0.05).Adding glycine iron to the diet significantly increased the serum albumin content of finishing pigs;Significantly reduce the activities of serum glutamic oxaloacetic transaminase and glutamic oxaloacetic transaminase in fattening pigs(P＜0.05);Different sources of iron in the diet did not significantly affect the serum total protein,globulin and urea nitrogen content of finishing pigs(P＞0.05).The addition of glycine iron,fumarate iron,and amino acid chelated iron significantly increased the serum GPX activity and GSH content in finishing pigs(P＜0.05);Significantly reduce the content of malondialdehyde(P＜0.05);In addition,different sources of iron in the diet had no significant effect on the activity of serum catalase and total superoxide dismutase,as well as the content of oxidized glutathione in finishing pigs(P＞0.05).In brief,under the conditions of this experiment,the feeding effect of adding glycine iron to the diet was significantly better than other iron sources.
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