ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (10): 1622-1630.doi: 10.11843/j.issn.0366-6964.2014.10.007

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Effect of the Supplementation of Different Nano-zinc Levels on Expression of Copper Zinc Superoxide in Testis and Epididymis of Ram Lambs

REN You-she,QIN Xiao-wei,GUO Li-na,ZHAO Hui,LIU Wen-zhong,ZHANG Jian-xin,ZHANG Chun-xiang*   

  1. (College of Animal Science and Veterinary Medicine, Shanxi Agricultural University,Taigu 030801, China)
  • Received:2014-03-24 Online:2014-10-23 Published:2014-10-23

Abstract:

The objectives of this study were to evaluate the expression of copper zinc superoxide dismutase and its cellular localization in testis and epididymis of ram lambs from different levels of Nano-zinc supplementation groups.Sixteen 9-month-old Jinzhong ram lambs with approximately weight and good healthy were randomly divided into 4 treatments,fed with a basal diet with supplementation of 0,50,100 and 150 mg•kg-1 DM Nano-zinc respectively.Experimental period was 90 d.At the end of test,the samples of testis and epididymis were collected.Expression of Cu-ZnSOD mRNA and protein was detected by real-time fluorescent quantitative PCR and Western blotting.Cellular localization of Cu-ZnSOD in testis was examined by immunohistochemistry.The quantitative real-time PCR results showed the rank order of Cu-ZnSOD mRNA expression was caput ≥testis > corpora >cauda.The mRNA and protein expression of Cu-ZnSOD in testis and epididymis were higher in the group with supplementation of 50 and 100 mg•kg-1 Nano-zinc than those in control group(P<0.05).The strong positive signals of Cu-ZnSOD protein were detected in spermatogenic cells of testis,and weak signals in interstitial tissue.The expression of Cu-ZnSOD was different among testis,caput,corpora and cauda of epididymidis.The optimal supplementation of Nano-zinc in diet could improve the expression of Cu-ZnSOD in testis and epididymis of rams.And the mechanisms needs to be further researched.

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