Effect Of Different Zinc Levels Diet On Production Performance Of Weaning Pigletsand Content Ofcopper, Iron, Zinc, Manganese In Its Hair

The aim of this study is to evaluated the effect of application of organic zinc on piglets.The main topic in this paper is to determineoptimum addition of zinc amino acid complexes through analysis the effect of two different zinc source and four different kinds of organic zinc levels in diet on fertility, fur characters and zinc content in serum and fur. Besides, we find a organic zinc sources that can be used as a feed additive byanalysis the content of elements in fur with different levels of zinc.This study plays an important role on application of organic zinc in feed and provided a theoretical basis for the comparative studies of piglet diets.For our experiments,120 Weaned Pigs that at an age of 22 days were be used. They were randomly divided into 5 groups (n=24 for each group).By block design, To determine optimum addition of zinc amino acid complexes we analysis Group A as the control that was fed based diets, group B、C、D were fed 20,60,100mg/kg zinc amino acid complexes, group E added 100mg/kg zincsulfate.Each test was repeated four times to improve the accuracy of the resultsAfter 42 days of treatment. The results in this study were presented as follows:1. with increasing of organic zinc levels in diet, the average weight of piglets was increased and the ratio of feed weight was decreased.In addition, the effect on group D is more obvious than group E when the amount of additives of organic zinc in group A and group D is at the same level. The character of Weaned Pigs’fur have upward tendency, whereas, there was no significant difference among them, the zinc content in serum increased, the effect on group D is more obvious than group E. When the zinc content in fur increased, the effect is significantly higher on group D than on group E. The Copper and Fe content in fur have descendent tendency and the manganese content in fur have upward tendency.whereas there was no significant effect on it.2.In group D, which was fed 100mg/kg zinc amino acid complexes.the growth of Weaned Pigs and the character of fur improved when compared with the group which added the same addition of zinc sulfate. the result showed that the optimum addition of zinc amino acid complexes should be 100mg/kg.