PRINT: ISSN 2221-1896
ONLINE : ISSN 2223-0343


Detection of bovine coronavirus in calf diarrheic samples by indirect antigen capture ELISA and RT-PCR

Santhosh Kumar S1, R.B. Rai1, K. Dhama1, G.J. Ranganath1, Saminathan M.1, M.Y. Wani2 and R. Saravanan2

1Division of Pathology, Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P; 2Immunology Section, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P

 
Abstract

In the present study, 160 fecal samples were collected from clinical cases of diarrheic calves from different Indian states covering eight dairy farms of Uttar Pradesh, Tamil Nadu, and Karnataka and dead calves of Bareilly region. The fecal samples from all these cases were screened for the presence of bovine coronavirus (BCoV) by using commercially available indirect antigen capture ELISA kit. Furthermore, all samples were subjected to RT-PCR for detection and confirmation of BCoV. RT-PCR was done by using two different types of primers to amplify the conserved nucleocapsid (N) gene of the virus targeting a 407 bp and 730 bp gene fragments of BCoV. Out of 160 cases, 5.63% (9/160) and 9.38% (15/160) of cases were positive for BCoV by ELISA and RT-PCR, respectively. Further, all the reported cases are from the Bareilly region of Uttar Pradesh with incidence rate of 9.38% (11/65). In conclusion, indirect antigen capture ELISA can be employed for the rapid detection of bovine coronavirus in diarrhoeic cases in fecal samples; however RT-PCR is more sensitive than ELISA for detection of coronavirus in diarrheic cases. Further studies are needed on bovine coronavirus to isolate from different parts of our country, to characterize them at genomic levels thereby investigating their antigenic and genetic properties and to check strain variations.

Keywords: Neonatal calf diarrhea; Bovine coronavirus; ELISA; RT-PCR; FAT; electron microscopy; prevalence; India.
 
To cite this article: Kumar SS, RB Rai, K Dhama, GJ Ranganath, M Saminathan, MY Wani and R Saravanan, 2013. Detection of bovine coronavirus in calf diarrheic samples by indirect antigen capture ELISA and RT-PCR. Res. Opin. Anim. Vet. Sci., 3(8), 225-234.
 
 

Home  |  Archive  |  Instructions  |  Submission  |  Editorial Board  |  Sample Paper

All rights reserved © roavs.com