Christensen, Jens Peter

Lund, Vibe Pedersen

Nielsen, Liza Rosenbaum

English

Copenhagen University Research Information System

u n i ve r s i t y  o f  co pe n h ag e n  Københavns UniversitetDistribution and predictors of footpad lesion scores in Danish organic andconventional broiler flocksLund, Vibe Pedersen; Christensen, Jens Peter; Nielsen, Liza RosenbaumPublication date:2015Document versionOther versionDocument license:OtherCitation for published version (APA):Lund, V. P., Christensen, J. P., & Nielsen, L. R. (2015). Distribution and predictors of footpad lesion scores inDanish organic and conventional broiler flocks. Poster session presented at XIXth World Veterinary PoultryAssociation (WVPA) Congress, Cape Town, South Africa.Download date: 03. Feb. 2020For at ændre ”Enhedens navn” og ”Sted og dato”:  Klik i menulinjen,  vælg ”Indsæt” > ”Sidehoved / Sidefod”. Indføj ”Sted og dato” i feltet for dato og ”Enhedens navn” i Sidefod Overskrift her     Navn på oplægsholder  Navn på KU-enhed  Distribution and predictors of footpad lesion scores in Danish organic and conventional broiler flocks Vibe Pedersen Lund1,2,*, Jens Peter Christensen1 & Liza Rosenbaum Nielsen2  1 Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg C, Denmark,   2 Department of Large Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg C, Denmark   * E-mail: vl@sund.ku.dk / vibepedersenlund@gmail.com   WVPAC, Cape Town – September 7th-11th 2015  Tekst starter uden punktopstilling  For at få punkt-opstilling på teksten, brug forøg indrykning   For at få venstre-stillet tekst uden punktopstilling, brug formindsk indrykning Overskrift her For at ændre ”Enhedens navn” og ”Sted og dato”:  Klik i menulinjen,  vælg ”Indsæt” > ”Sidehoved / Sidefod”. Indføj ”Sted og dato” i feltet for dato og ”Enhedens navn” i Sidefod WHY STUDY FOOTPAD DERMATITIS (FPD)?  • Footpad dermatitis (FPD) as an indicator     of on-farm broiler welfare • Current organic market share = 0.5% • FPD surveillance in Denmark since 2002  • Same system for conventional and    organic broiler flocks  • Fundamental differences between organic and conventional broiler production potentially affecting FPD:                                                                Potential effect on footpad dermatitis?                  Department of Large Animal Sciences Lund et al., WVPAC, Cape Town - September 7-11 2015 Slide 2 Growth rate Age at slaughter  Access to outdoor area  Air ammonia content   Light intensity Stocking density  Tekst starter uden punktopstilling  For at få punkt-opstilling på teksten, brug forøg indrykning   For at få venstre-stillet tekst uden punktopstilling, brug formindsk indrykning Overskrift her For at ændre ”Enhedens navn” og ”Sted og dato”:  Klik i menulinjen,  vælg ”Indsæt” > ”Sidehoved / Sidefod”. Indføj ”Sted og dato” i feltet for dato og ”Enhedens navn” i Sidefod OBJECTIVE AND METHOD   Department of Large Animal Sciences Lund et al., WVPAC, Cape Town - September 7-11 2015 Slide 3 • Objective: Investigation of the distribution of FPD scores and predictors in Danish organic and conventional broiler flocks  • Study population:  Danish organic (=302) and conventional (=11,628) broiler flocks processed in 2012-2014 (99.6% of Danish production)    Slaughterhouse X Farm X House C House B House A  • Data analysis: Multivariable generalised linear regression models taking the hierarchical structure of the Danish broiler industry into account   Rotations 1 - ? Tekst starter uden punktopstilling  For at få punkt-opstilling på teksten, brug forøg indrykning   For at få venstre-stillet tekst uden punktopstilling, brug formindsk indrykning Overskrift her For at ændre ”Enhedens navn” og ”Sted og dato”:  Klik i menulinjen,  vælg ”Indsæt” > ”Sidehoved / Sidefod”. Indføj ”Sted og dato” i feltet for dato og ”Enhedens navn” i Sidefod WHAT WERE THE RESULTS? Department of Large Animal Sciences Lund et al., WVPAC, Cape Town - September 7-11 2015 Slide 4 • Significantly higher FPD flock scores in organic versus conventional flocks • Season was a major predictor – highest variation in organic flocks  • Other predictors:  • Organic flocks: year,  • Conventional flocks: year, age at slaughter, season within year Organic  =  48.5 Conventional  = 28.1 Average FPD flock score:  Tekst starter uden punktopstilling  For at få punkt-opstilling på teksten, brug forøg indrykning   For at få venstre-stillet tekst uden punktopstilling, brug formindsk indrykning Overskrift her For at ændre ”Enhedens navn” og ”Sted og dato”:  Klik i menulinjen,  vælg ”Indsæt” > ”Sidehoved / Sidefod”. Indføj ”Sted og dato” i feltet for dato og ”Enhedens navn” i Sidefod HOW CAN THE RESULTS BE INTERPRETED?  Evaluation of scoring system and sampling strategy (Lund, V.P, Oliveira, A. R. S., Nielsen, L. R. & Christensen, J. P., 2015. Evaluation of the Danish surveillance of footpad lesions in organic and conventional broilers. Annual Meeting of the Society for Veterinary Epidemiology and Preventive Medicine (SVEPM), 25-27th March 2015, Ghent, Belgium)  • Risk of misclassification of FPD lesions may be higher in organic feet • Sampling strategy can be improved  Possible directions for future research into risk factors • Substantial farm variation suggests further investigations into characteristics of farms with recurring high FPD flock scores  • External factors potentially causing variation between flocks reared in the same house within farm, but in different rotations, need further investigation:      Department of Large Animal Sciences Lund et al., WVPAC, Cape Town - September 7-11 2015 Slide 5 Genetic factors Management factors Dietary factors 

Distribution and predictors of footpad lesion scores in Danish organic and conventional broiler flocks

https://curis.ku.dk/portal/files/145926082/Poster_WVPA_Vibe_Pedersen_Lund_et_al_2015.pdf

Distribution and predictors of footpad lesion scores in Danish organic and conventional broiler flocks

Abstract

Similar works

Full text

Available Versions

Copenhagen University Research Information System