| This Experiment was condueted to study the most suitable addition level on weanling pigs through feeding experiment and relative blood parameters analysis experiment.192weanling pigs, which average weight was7.84±1.11Kg at29d of age, was random assigned to4groups(sigle factorial), every group contain3replications, and every replication contain8weanling pigs. The corn-soybeam basic diets was added basic zinc sulfate at75mg/Kg,100mg/Kg,125mg/Kg, and zinc sulfate at100mg/kg, as the treatment groups to study the effect of basic zinc sulfate on growth performance and blood parameters of weanling pigs. The results showed that:basic zinc sulfate significantly increased feed intake and daily gain, reduced feed conversion (P<0.05), and piglet serum ALB, serum zinc levels, T-AOC, IgG concentration and zinc peroxidase (CuZnSOD) activity was improved significantly (P<0.01) compared with ZnSO4, but exceeded100mg/Kg and75mg/Kg basic zinc sulfate on varying degrees. The concentraiton of CD4in piglet serum was tended to increase by the increase of basic zinc sulfate in diet, with a dose-response relationship, but there was no significant difference(P>0.05). Therefore the most suitable addition of basic zinc sulfate in diet of weanling pigs is125mg/Kg. |
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