8/8/2019 Retrospective field study of the evolution of growth performances after piglet vaccination against PCV2

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Proceedings of the 21stIPVS Congress, Vancouver, Canada July 18-21, 2010 413

Poster Presentations

P.107

Retrospective field study of the evolution of growth performances after piglet vaccination against PCV2

Pascal Fourchon2 Aude Miorcec3 Vincent Auvigne1 Catherine Belloc3

1. Ekipaj, Pozuelo de Alarcn, Spain; 2. Coopagri Bretagne, Landerneau, France; 3. National College of Veterinary Medicine, Nantes, France

Introduction

In the mid nineties, when PMWS appeared in France, mortalityin afected herds was requently above 10 % during the post-weaning period. Fiteen years later, the disease caused by PCV2looks very diferent. Post-weaning losses have decreased tonormal range in most herds. Few pigs exhibit clinical or post-mortem signs linked to PCV2 inection but poor growth ratesresulting in high within-batch weight variability are requent.Consequently many vets advise armers to vaccinate pigletswhen growth heterogeneity is high even without clear evidenceo PCV2 associated disease. In that context, we wanted to evalu-ate the impact o piglet vaccination against PCV2 on pig growthin a group o herds.

Materials and Methods

The study took place between March and August 2009 in 69arrow-to-nish herds. For each herd we compared data rom (i)three batches beore and (ii) three batches ater the implemen-tation o vaccination. Piglets were vaccinated either with Cir-coex (1 ml), or Circovac , (0.5 ml).The criteria analysed were:Average Daily Gain rom birth to slaughter (ADG), mortality raterom 30 kg to slaughter (MR), lean thickness (M2), percentageo pigs with carcass weight below 80 kg (CW