Research Article

Prophylactic and therapeutic effects of egg yolk immunoglobulin against porcine transmissible gastroenteritis virus in piglets

  • Yuzhu ZUO 1 ,
  • Jinghui FAN , 1 ,
  • Huixia FAN 2 ,
  • Tanqing LI 1 ,
  • Xiaobo ZHANG 1
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  • 1. College of Animal Science and Veterinary Medicine, Agricultural University of Hebei
  • 2. College of Traditional Chinese Veterinary Medicine, Agricultural University of Hebei

Received date: 17 Jul 2008

Accepted date: 07 Aug 2008

Published date: 05 Mar 2009

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg

Abstract

Porcine transmissible gastroenteritis virus (TGEV) is the causative agent of acute diarrhea of newborn piglets that provokes high mortality rates in affected farms. In this study, specific immunoglobulin from egg yolk against TGEV was produced by immunization of White leghorn hens. Enzyme-linked immunosorbent assay (ELISA) and virus neutralization (VN) test revealed that the specific antibody titer started to increase on the tenth day post-immunization, reached its peak on the eighth week, and remained at a high level until the last week that we tested. The prophylactic and therapeutic effects of egg yolk immunoglobulin (IgY) was investigated in piglets. IgY was found effective to increase piglets survival rate significantly after challenge exposures in prophylactic efficacy analysis. The therapeutic effects test revealed that the mortality was dramatically reduced by orally administered IgY. All these results in our study indicated that IgY specific to TGEV could be an alternative prophylactic method like colostral antibodies against TGEV in piglets.

Cite this article

Yuzhu ZUO , Jinghui FAN , Huixia FAN , Tanqing LI , Xiaobo ZHANG . Prophylactic and therapeutic effects of egg yolk immunoglobulin against porcine transmissible gastroenteritis virus in piglets[J]. Frontiers of Agriculture in China, 2009 , 3(1) : 104 -108 . DOI: 10.1007/s11703-008-0080-9

Acknowledgements

This work was supported by the National Science and Technology Infrastructure Fund of China (No. 2005DKA21205-5) and also funded by Agricultural University of Hebei, China. The authors are grateful to Dr. Rongyan Zhou for her assistance of data analysis.
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