Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2016 Oct 1;78(9):1385-1389.
doi: 10.1292/jvms.15-0723. Epub 2016 May 12.

Impact of a porcine epidemic diarrhea outbreak on swine productivity in Japan: a retrospective cohort study

Itsuro Yamane  1 , Hisanori Yamazaki, Sayoko Ishizeki, Yugo Watanabe, Hanako Okumura, Mitsuharu Okubo, Katsumasa Kure, Yuiko Hayakawa, Makoto Furukawa, Munetaka Ooi, Yoshihiro Mizukami, Mitsugu Ito
Affiliations

Impact of a porcine epidemic diarrhea outbreak on swine productivity in Japan: a retrospective cohort study

Itsuro Yamane et al. J Vet Med Sci. .

Abstract

The objective was to investigate porcine epidemic diarrhea (PED) outbreak that occurred in 2014 in Japan and its effects on herd-level productivity using a data recording system (PigINFO). The study herds were selected from farrow-to-finish herds (n=99) that entered in the PigINFO system between July 2013 and March 2015. From 1 April to 30 June 2014 (PED epidemic), any herds with clinical signs of PED and feces positive for porcine epidemic diarrhea virus (PEDV) on polymerase chain reaction analysis and/or immunohistochemical staining were defined as PED-positive (n=38). They were further classified into those with long PED periods (L-PED-positive; n=28) and those with short PED periods (S-PED-positive; n=10). Herds with no clinical signs of PED were classified as PED-negative (n=61). Herd-level production data, including preweaning mortality (%; PRWM), postweaning mortality (%; POWM), pigs weaned per litter (PWL), pigs born alive per litter, litters per mated female per year and pigs marketed per sow (MP), were calculated every 3 months during study period. During the PED epidemic, L-PED-positive herds had significantly higher PRWM and POWM than PED-negative herds, and L-PED-positive and S-PED-positive herds had significantly lower PWL. During October-December 2014, L-PED-positive herds had significantly fewer MP than PED-negative herds. The PED outbreak increased mortality and consequently reduced the numbers of marketed pigs. The rapid control of an outbreak is important for reducing the financial losses arising from PED infections.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
Average preweaning mortality. a, b: points with different letters differ significantly (P<0.05). N.S.: not significantly different (P≥0.05). A (lower vertical line with capsule):lower value of 95% confidence interval for PED-negative group. B (higher vertical line with capsule):higher value of 95% confidence interval for L-PED-positive group. C (higher vertical line without capsule):higher value of 95% confidence interval for S-PED-positive group.
Fig. 2.
Fig. 2.
Average postweaning mortality.
Fig. 3.
Fig. 3.
Average pigs weaned per litter.
Fig. 4.
Fig. 4.
Average pigs born alive per litter.
Fig. 5.
Fig. 5.
Average litters per mated female per year.
Fig. 6.
Fig. 6.
Average pigs marketed per sow per year. Data obtained for 3 months were converted into annual data by multiplying them by 4.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

References

    1. Alvarez J., Sarradell J., Morrison R., Perez A.2015. Impact of porcine epidemic diarrhea on performance of growing pigs. PLoS ONE 10: e0120532. doi: 10.1371/journal.pone.0120532 - DOI - PMC - PubMed
    1. Chen Q., Li G., Stasko J., Thomas J. T., Stensland W. R., Pillatzki A. E., Gauger P. C., Schwartz K. J., Madson D., Yoon K. J., Stevenson G. W., Burrough E. R., Harmon K. M., Main R. G., Zhang J.2014. Isolation and characterization of porcine epidemic diarrhea viruses associated with the 2013 disease outbreak among swine in the United States. J. Clin. Microbiol. 52: 234–243. doi: 10.1128/JCM.02820-13 - DOI - PMC - PubMed
    1. Goede D. M. R.2015. Production impact study update. Swine Health Monitoring Project 08/01/2014. University of Minnesota. Available: http://www.cvm.umn.edu/sdec/SwineDiseases/pedv/SHMP_14/index.htm. Accessed 5/7/2015.
    1. Hanke D., Jenckel M., Petrov A., Ritzmann M., Stadler J., Akimkin V., Blome S., Pohlmann A., Schirrmeier H., Beer M., Höper D.2015. Comparison of porcine epidemic diarrhea viruses from Germany and the United States, 2014. Emerg. Infect. Dis. 21: 493–496. doi: 10.3201/eid2103.141165 - DOI - PMC - PubMed
    1. Jung K., Saif L. J.2015. Porcine epidemic diarrhea virus infection: Etiology, epidemiology, pathogenesis and immunoprophylaxis. Vet. J. 204: 134–143. doi: 10.1016/j.tvjl.2015.02.017 - DOI - PMC - PubMed