Defining resilient pigs after a Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) challenge using activity and feeding data from accelerometers

L.E. Van Der Zande, J.R. Dunkelberger, Bas Rodenburg, P.K. Mathur, W.J. Cairns, M.C. Keyes, J.M. Eggert, E.A. Little, S.A. Dee, E.F. Knol

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Porcine reproductive and respiratory syndrome (PRRS) is an infectious viral disease in pigs. PRRS causes reproductive failure in sows and respiratory infections in growing pigs. To improve pig health and minimise economic losses, resilient pigs are preferred within the herd. Resilient pigs still become infected, yet are able to recover following infection, showing less variation in activity and feeding. In this study, 232 commercial crossbred pigs were equipped with individual accelerometer ear tags to monitor the number of active, feeding, and hyperactive events per individual per hour. At eight weeks of age, pigs were inoculated with PRRS virus 1-7-4. Data from accelerometers were collected 23 days prior to challenge and 42 days post-infection (dpi). Expected levels of activity, feeding, and hyperactivity were estimated by regressing behavioural traits on observed datapoints prior to challenge. This regression line was extended to 42 dpi. Then, deviations from the regression line were quantified as Root Mean Square Error (RMSE) for each individual during the following time periods: pre-challenge, 0-13 dpi, and 13-42 dpi. All traits decreased and RMSE increased post-challenge. These results are consistant with clinical signs of PRRS, including lethargy and loss of appetite. In addition, association of these traits with survival was also investigated. RMSE prior to PRRS-infection was not predictive of survival after infection. However, RMSE of feeding and activity during the peak challenge period (0-13 dpi) was predictive of survival, where pigs with less deviation in behaviour were more resilient to the PRRS challenge.

Original languageEnglish
Title of host publicationPrecision Livestock Farming 2019
Subtitle of host publicationPapers Presented at the 9th European Conference on Precision Livestock Farming, ECPLF 2019
EditorsBernadette O'Brien, Deirdre Hennessy, Laurence Shalloo
PublisherTeagasc
Pages471-475
Number of pages5
ISBN (Electronic)9781841706542
Publication statusPublished - Aug 2019
Event9th European Conference on Precision Livestock Farming, ECPLF 2019 - Cork, Ireland
Duration: 26 Aug 201929 Aug 2019

Publication series

NamePrecision Livestock Farming 2019 - Papers Presented at the 9th European Conference on Precision Livestock Farming, ECPLF 2019

Conference

Conference9th European Conference on Precision Livestock Farming, ECPLF 2019
CountryIreland
CityCork
Period26/08/1929/08/19

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Keywords

  • Accelerometers
  • Behaviour
  • Pig
  • PRRS
  • Resilience
  • RMSE

Cite this

Van Der Zande, L. E., Dunkelberger, J. R., Rodenburg, B., Mathur, P. K., Cairns, W. J., Keyes, M. C., ... Knol, E. F. (2019). Defining resilient pigs after a Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) challenge using activity and feeding data from accelerometers. In B. O'Brien, D. Hennessy, & L. Shalloo (Eds.), Precision Livestock Farming 2019: Papers Presented at the 9th European Conference on Precision Livestock Farming, ECPLF 2019 (pp. 471-475). (Precision Livestock Farming 2019 - Papers Presented at the 9th European Conference on Precision Livestock Farming, ECPLF 2019). Teagasc.