Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Efecto de la camada y las condiciones ambientales sobre la mortalidad de gazapos en periodos con distinta incidencia de enteropatía epizoótica del conejo
Year:2009
Research Areas
  • Animal production
Information
Abstract
Very few works report the effect of litter on rabbits microflora and their mortality rate. However, the proportion of variance of productive traits explained by litter ranges from 24.5 to 62.6 %. Thorough disinfection in farms has also been proved to be a useful strategy to prevent outbreaks of Epizootic Rabbit Enteropathy (ERE) and the proliferation of bacterium Clostridium perfringens. Thus, this work aims to estimate the effect of litter and environment on young rabbit mortality due to ERE and C. perfringens concentration in caecal contents, throughout two consecutive fattening periods. In the first period, the mortality rate was 2.97 % whereas in the second one, it rose up to 12.2 % (P < 0.0001). This increase was parallel to an increment in air concentration of spores of C. perfringens (56000 vs 300000). Litter accounted for 57.5 and 47.0 % of mortality variance in each period. It did not appear to exist a relation between litter mortality rate and the concentration of spores of C. perfringens in the nest nor with C. perfringens colonies count in the soft faeces of the mother. C. perfringens concentration in caecal contents was positively related to the observation of clinical signs of ERE, which mostly appear around the 14th day after weaning, irrespective of the date the latter occured. As a conclusion, rabbits of the same litter should always be distributed across treatments to avoid the possible effect of litter.
International
No
Congress
XIII Jornadas Sobre Producción Animal AIDA
960
Place
Zaragoza
Reviewers
Si
ISBN/ISSN
978-84-613-2311-1
Start Date
12/05/2009
End Date
13/05/2009
From page
191
To page
193
XIII Jornadas Sobre Producción Animal AIDA. M. Joy, J. H. Calvo, C. Calvete, M. A. Latorre, I. Casasús, A. Bernués, B. Panea, A. Sanz, J. Balcells (Eds.).
Participants
  • Autor: Nuria Nicodemus Martin (UPM)
  • Autor: Juan Carlos de Blas Beorlegui (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Producción Animal
  • Departamento: Producción Animal
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